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List of keyboard and lute compositions by Johann Sebastian Bach
Keyboard and Lute Works is the topic of the fifth series of the New Bach Edition. Keyboard Works (Klavierwerke) by Johann Sebastian Bach traditionally refers to the Nos. 772 to 994, Chapter 8 in the BWV catalogue, listing compositions for a solo keyboard instrument like the harpsichord or the clavichord. Despite the fact that organ is also a keyboard instrument, and that in Bach's time the distinction was not always made whether a keyboard composition was for organ or another keyboard instrument, Wolfgang Schmieder ranged organ compositions in a separate section of the Bach-Werke-Verzeichnis (Nos. 525-771). Also other compositions for keyboard, like compositions for lute-harpsichord and fortepiano were listed outside the "Klavierwerke" range by Schmieder. Lute works are in the range 995-1000, Chapter 9 in the BWV catalogue. Bach was a prodigious talent at the keyboard, well known during his lifetime for both his technical and improvisational abilities.
Many of Bach's keyboard works started out as improvisations. Bach wrote widely for the harpsichord, producing numerous inventions, suites, fugues, partitas, overtures, as well as keyboard arrangements of concerto music by his contemporaries. The fortepiano is an instrument Bach would have encountered once, by the end of his life when it was recently invented, while visiting his son in Potsdam. The visit resulted in Das Musikalische Opfer, parts of which may have been intended for the new instrument. Several of Bach's works for keyboard were published in print in his own lifetime.
Four such publications were given the name Clavier-bung (Keyboard Practice) by the composer. Bach was not the first to use that name, for example Bach's Leipzig predecessor Johann Kuhnau had used it for two volumes published in the late 17th century. The first volume, Bach's Opus 1, was published in 1731, while the last was published a decade later. The first, second and last volume contain music written for harpsichord, while the third was written for the organ, only four duets contained in that volume ending up in the BWV 772-994 range. The Well-Tempered Clavier, a collection of forty-eight Preludes and Fugues, was not printed until half a century after Bach's death, although it had circulated in manuscript form before that.
Before the extensive rediscovery of his works in the nineteenth century, Bach was known almost exclusively through his music for the keyboard, in particular his highly influential Well-Tempered Clavier, which were regularly assigned as part of musicians' training. Composers and performers such as Ludwig van Beethoven and Camille Saint-Sans first showed off their skills as child prodigies playing the entire cycle of Bach's forty-eight Preludes and Fugues. Modern composers have continued to draw inspiration from Bach's keyboard output. Dmitri Shostakovich, for example, wrote his own set of Preludes and Fugues after the Bach model. Jazz musicians and composers, in particular, have been drawn to the contrapuntal style, harmonic expansion and rhythmic expression of Bach's compositions, especially the works for keyboard.
The first section below lists all compositions in the BWV 772-994 range, then follows a section listing other compositions for keyboard instruments, excluding the organ. After the composer's death most of his keyboard compositions, and many others, are, or were, often performed on the piano, played either directly from a score for the instruments as the composer knew them, or from a score that was a transcription for piano. The latter is sometimes needed even for harpsichord scores while for instance a composition intended for a two-manual harpsichord (like the Goldberg Variations) can present difficulties for the crossing of hands when performed on a single-keyboard instrument like the piano. Some of the transposers/arrangers of Bach's work added their own inspiration, like Busoni in his arrangement and expansion of Bach's Chromatische Fantasie und Fuge, BWV 903. The fourth section of this list refers to such transcriptions and arrangements for the piano.
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Jawi keyboard
The Jawi keyboard layout is a keyboard layout for writing the Jawi script on the Windows platform. It is based on a standard set by SIRIM (Standard Malaysia) in 2011. The layout was devised by Technical Committee in Multi-Lingual Computing at SIRIM. It was approved in 2011. The design is based on 3 principles; the layout is based on existing Arabic keyboard layout since many Jawi characters are based on Arabic characters Make minimal changes to the existing layout Add feature to support JawiAs a result, the Technical Committee agree on two designs, Normal Position and Shift Position. Apart from the SIRIM approved Jawi Keyboard for Windows, a phonetic Jawi keyboard layout that is based from macOS Jawi (QWERTY) that was written for Windows is also available. This version of the keyboard layout is different as it allows typing without the need of an Arabic Keyboard for a more natural typing on a normal QWERTY Keyboard.
Speaking of the Dareu, which is completely different from the previous ones, the A-series mechanical keyboards must be missing, and the A87 in the A-series relies on the original designs of Guiyan, Mengyu, Guangnian, and Tongqu, as well as the convenient and practical keyboard. It became popular because of the magnetic cover. Although the newly launched A87Pro does not continue the lively and lovely pattern design and magnetic cover, it adopts the Gasket structure of the A98 and has also undergone a slight upgrade. Now, let's take a look at how it performs.
包装&附件：
The packaging of the Dareu A87Pro three-mode mechanical keyboard is designed as a box set. The outer layer is mainly low-key black, but the model, LOGO, and display pictures are designed in gold, which can also flash different colors under the light. Effect.
Since the model I received is an evaluation version, the accessories are not complete. At present, there are only dust covers, manuals and a USB Type-C cable. In the future, a key puller and 7 supplementary keycaps.
外观&细节：
The appearance design of this A87Pro three-mode mechanical keyboard is actually basically the same as that of the A87 customized three-mode keyboard, but it incorporates the features of the A98 in some details. The size of the keyboard is about 363mm×135mm×23mm, and there are two colors, namely the new Black King Kong and the well-known sky version, and this color design is also very suitable for use as a couple keyboard. Although the color scheme of Black King Kong is mainly black, it does not look monotonous and dull, and these white and yellow keycaps and characters just make it full of vigor and vitality, even if you look at it for a long time, you will not feel tired.
It still continues the narrow frame design of the A87, and uses a frosted top cover, which has a very good tactile and visual performance. In terms of key layout, it adopts a standard 87-key arrangement scheme, and the smaller body size can better adapt to the smaller desktop space, freeing up more space for the mouse on the right side.
The thoughtful design on the left and right sides of the keyboard is exactly the same as that of the A98. The left side is the switch button for the three-mode connection. Toggle the switch to switch between 2.4G, wired, and Bluetooth, which is very convenient. The lower part on the right side is the storage compartment of the 2.4G receiver, which is not only convenient to put and take out, but also will not fall off. At the same time, the receiver is also gold-plated to make the connection more stable.
It is equipped with a set of OEM-height keycaps, coupled with the height of the keyboard itself and the two-stage support design, it can have a more ergonomic slope design, and it will be more comfortable to code on weekdays. The design of the bottom shell is more similar to that of the A98, both of which are more practical and simple. The middle part has a three-way wire groove, which is convenient for players to route wires according to their usage habits and desktop layout. It is a two-stage design with non-slip rubber, and the overall anti-slip effect is very good.
The keyboard adopts the Type-C interface, and a card slot design is added above the interface to make the cable connection more stable and not easy to disconnect. However, such a design will make it very limited to replace the wires that can be used, so for users who often go out and carry the needs, the exclusive wires must be brought.
键帽&轴体：
The keyboard is equipped with high-purity PBT keycaps, which are designed with two-color injection molding, OEM height, closed character scheme, and the surface of the keycaps has a slightly frosted touch, which is delicate and smooth, has excellent wear resistance and oil resistance, and is quite durable.
The model in the author's hand is equipped with the newly upgraded Zijin Axis Pro from Dareu. Its trigger force is about 45g, the bottoming force is about 55g, the trigger stroke is about 2.1mm, the total stroke is about 3.8mm, and the life span can reach 80 million. Second-rate. Compared with the old Zijin shaft, it has upgraded the fence-type shaft, and uses a new grease inside, which is more stable and smooth in terms of hand feeling, and has significantly improved the shaking feeling, friction sound and noise of the shaft core.
The keyboard is equipped with a full-key hot-swappable function, and is compatible with most tripod and pentapod switches on the market, allowing players to easily experience the fun of DIY. Its large key position is designed as a satellite axis, and the overall consistency is very good, especially the space bar, which is perfectly adjusted, but the Shift key is a little bit fleshy.
RGB backlight:
Although Dareu’s previous keyboards were slightly weaker in terms of light brightness, the brightness of this keyboard has been significantly improved, because it is equipped with a frosted and transparent PC positioning board and a white fence. Interlayer silicone, so the reflection and divergence of light will appear softer and more natural under the reflection of the white background. It is equipped with a global RGB backlight system, through "FN+【" to switch the lighting effect mode, "FN+】" to switch the light color, and "FN+ arrow keys up/down" to adjust the light brightness. Overall, its lighting gameplay and visual perception are quite good.
Keyboard disassembly:
This keyboard uses a Gasket structure that is fixed by buckles. Since there is no rigid connection inside, it also makes it feel more soft and elastic, and the percussion sound is softer and purer.
After disassembling the bottom case, you can see the purple silicone pad on the lower cover, and then unscrew the four screws on the top of the bottom case to see the built-in sunken battery compartment, and the capacity of the two batteries It is 4000mAh. Compared with the A98, this design is neater and more friendly to OCD users.
Different from the Gasket structure of A98, it uses a fence-type interlayer silicone, while the A98 uses a flat silicone clip and a silicone plug design that is refilled at the PCB groove. Although the design of A87pro will save some cost, we can see from the front that its surroundings are closely connected with the bottom case, and even the side walls around the bottom case are covered, and we can really feel it in actual use. The noise suppression effect is very good.
The back of the PCB of the keyboard is very clean and tidy, and the hot-swappable axle seat solution uses the Kaihua axle seat. The PC positioning plate under the keycap is frosted and transparent, coupled with the white fence-style interlayer silicone under it, it makes its overall appearance very beautiful, and it can also have a better natural and soft lighting effect after turning on the backlight.
Use test:
The keyboard not only supports wired, 2.4G and Bluetooth three-mode connection solutions, but also supports full-key non-retouching solutions under the three connection modes, which can effectively avoid operation errors caused by accidental touches in intense games, and can easily Deal with daily entertainment office or e-sports games.
It not only supports the current mainstream operating systems such as Windows/MacOS/IOS/Android, but also has good compatibility with PCs and mobile devices. Convenient and friendly. At the same time, the keyboard is also adapted to the Mac layout. Users can switch between the Windows layout and the Mac layout through FN+W. It is easy and convenient to use, and there is no need to worry about conflicts caused by different key functions or usage habits.
The keyboard has a built-in 4000mAh lithium battery, which can provide about 45 days of battery life when the backlight is turned off, and about 7 days of battery life when the backlight is turned on. At the same time, because it is equipped with an intelligent sleep function, it can provide it with a longer standby time, and it can also reduce the number of times users frequently switch the keyboard manually.
Summarize:
Dareu A87Pro three-mode mechanical keyboard is not only an upgraded version of A87, but also a mechanical keyboard that incorporates the advantages of A98. It is not easy to have a mechanical keyboard with a good feeling, and the compact 87-key layout also presets a very rich multi-function combination key, which provides a very convenient and practical experience for users' daily office or game entertainment. The keyboard is now on pre-sale, and the pre-sale price is 599 yuan. Users who like this keyboard should not miss it!
The author declares that there is interest in this article, please respect the author and the content shared, communicate friendly, and make rational decisions~
Some time ago, I bought the first Gasket structure mechanical keyboard - the upstart GM780. After some experience, I feel that the mute effect of this Gasket structure keyboard is really good. It coincides with TTC recently released the mute axis V2, so it was born. The idea of replacing this keyboard with Ice Quiet Axis V2 to reduce the sound to a minimum. Just do it, 80 TTC ice static axis V2 arrangements!
The appearance of Ice Static Axis V2 is worthy of its name. The transparent plastic body of the Axis is crystal clear like small ice cubes. It still looks cool in this hot summer. Different from the yellow-brown shrapnel and spring used in the general shaft body, the Bingjing shaft V2 uses silver shrapnel and spring, which makes the overall tone of the shaft body uniform and unobtrusive, and the visual presentation effect tends to be consistent.
Through dismantling, it can be seen that the shaft core of the ice static shaft V2 continues to use the sound-absorbing double insurance structure design and the double-side wall dust-proof patented structure. Segmented independent sound reduction and noise reduction, the mute effect is obvious; the latter allows the shaft core to still fit the shaft cover when it is pressed down, which effectively solves the problem of dust entering the shaft body and improves the stability of the shaft core.
Concentrating mirror solution, the end of the concentrating mirror is slightly raised and installed to be closer to the LED patch light, gathering and converging the LED light source. At the moment when transparent kits and transparent keycaps are popular, it is undoubtedly a wise choice to enhance the overall lighting perception of the keyboard by enhancing the brightness of the light passing through the shaft body and the scattering effect.
The triggered shrapnel structure is silver-plated, and the contacts of the shrapnel are gold-plated. The gold contacts are very obvious in the silver-white luster. This is the process commonly known as "wearing gold and wearing silver". The long spring design is exactly the same as the gold powder switch, and it is about one-third longer than the spring of the ordinary red switch. You can clearly see the traces of grease on the factory-run switch.
The parameters of the ice static axis V2 are as follows: 39g trigger pressure, 3.5mm total stroke, 2.0mm trigger stroke, and 50 million trigger life. From the specific parameters, we can know that the ice static axis V2 is a linear mute with light pressure and short stroke. shaft. If you are looking for a reference object for benchmarking, the V2 parameters of the ice static axis and the parameters of your own gold powder axis are close, which can be roughly regarded as the silent version of the gold powder axis, but the total stroke is slightly shorter and the bottom will be faster.
相比较于之前的冰静轴，冰静轴V2在冰静轴的基础上主要做了三大升级：加持“穿金戴银”工艺，对导电端子和弹簧进行镀银，提高轴体抗氧化和耐用性；再就是增加聚光镜模块，提高轴体导光表现；最后就是将轴芯替换为更加耐磨的新型透明材料。这一系列的升级优化了前作的一些不足，让冰静轴V2在外观、耐久性、灯光表现上有了显著的提升。
Compared with the TTC ice static axis V2 of the condenser solution and the TTC fast silver axis of the lens solution, the effect of the condenser focusing and converging the light source is quite obvious - under the same LED light source, the brightness of the light projected by the condenser is far better than that of the lens structure, which can be regarded as the current The strongest light guide solution I have ever seen.
Install the shafts one by one on the upstart GM780, turn on the white light of GM780, the almost transparent shaft core and shaft cover add the addition of the condenser to the lighting effect, the crystal clear feeling of TTC ice static shaft V2 becomes more and more obvious , the word transparent is vividly displayed.
Ice Static Axis V2 is not only crystal clear under white light, but its transparent appearance can well display the RGB lighting of the keyboard. It is perfect for matching with the current transparent kit and transparent keycaps.
In terms of feel, the TTC Ice Static Switch V2 is smooth and gentle to press, the rebound is strong with the hand, and there is no lag when pressing to the bottom. The specific hand feeling presentation, as mentioned above, is not far from the feel of the TTC gold powder switch, or even quite similar. The sound-absorbing double insurance structure design will not make a sound when the shaft touches the bottom. With the blessing of the Gasket structure, it basically achieves the experience of integrating into the environment sound.
With the gradual out of the circle of mechanical keyboards and the improvement of user demand, there are many kinds of silent switches on the market recently, but to achieve the mute effect while ensuring that the switch feels smooth and smooth, maybe TTC’s silent switch series is the best. TTC has integrated some of the latest technical optimizations on the Bingjing axis V2, which has both hand feeling and mute performance, and also added a certain "light pollution" attribute. Whether you are an RGB lover or have a relatively strong mute demand for the keyboard, TTC Bingjing Axis V2 is the best choice for your keyboard!
Today I have a plate of what keyboards everyone uses, hahaha.
First of all, let’s take a look at the big guy’s keyboard. The big guy’s keyboard is really my dream keyboard. Feierke Shengshou second generation cheese green is really super beautiful and feels invincible, but the price is prohibitive. But it feels like a gift!
Look at my own, ikcb keyboard, which is more retro. All aspects are not bad, comprehensive cost-effective. Several colors are given away, both boys and girls can enter.
There is also another ikbc color used by a male colleague, almost all black, this one is relatively low-key.
A few colleagues also bought the same model made in Beijing. At the beginning, the office bought one, but later everyone thought it was good, and the price was relatively cheap, so they bought it.
This one also has lighting effects, I feel that boys use it more, hahaha.
Of course, the most used ones are actually the original keyboards used with the company's computers, similar to this one.
When buying a keyboard, there are red switches, brown switches and black switches to choose from, and you can choose according to your needs. Frugality depends on people~
Hello, everyone, I am a digital enthusiast and a crazy digital hacker. Love life, love to share, don’t brag or criticize, real experience, if you like it, you can like it and follow it, so as not to get lost~~
As an important peripheral of the computer, the keyboard is really annoying if it is not selected well. I bought the last keyboard at Pinxixi for tens of dollars. It looks beautiful and has RGB lighting effects. After I got it, I was complacent for a long time, thinking that I had picked up a big deal. But, within a month, all kinds of failures and garbled codes made me want to scold my mother, and finally made me fall to pieces. After suffering this loss, I bought the Pennefather V700DIY mechanical keyboard.
So why choose this product over others? One is that the Rapoo V700DIY keyboard supports full-size hot-swappable, the other is that it is a customized keyboard, and you can DIY according to your own preferences in the later stage, and the customization is highly playable. The KA-12 linear fast silver axis highlights the short stroke, fast trigger, and no sense of paragraph. Of course, this is my biggest feeling after using it for nearly 10 days.
Considering that many friends are still troubled by not being able to buy a keyboard that is easy to use, today I will take this opportunity to tell you about this Rapoo V700DIY keyboard in detail, and it may bring certain benefits to your purchase. s help.
In order to let everyone see more clearly, first briefly talk about the packaging
The overall packaging of the Rapoo V700DIY keyboard is mainly black and blue. The front is a 3D rendering of the product, as well as the brand LOGO and product model.
On the back is the introduction of the 6 highlights of Rapoo V700DIY:: Full keyboard conflict-free design, full-key hot-swappable switch design, full-keyboard editable, RGB backlight system that can be adjusted freely through the driver, on-board memory, ready to use, And two-color PBT keycaps. On the whole, it is very simple and simple, and there is no excessive packaging. After all, the wool comes from the sheep, and we are the ones who pay the bill.
The inside of the packaging is also very simple, instead of focusing on the packaging like those niche brands. The internal list mainly includes: Rapoo V700DIY keyboard body, Type-C cable, key puller, and manual.
In fact, we have already seen the DIY appearance of Rapoo V700 from the outer packaging. It still has a personalized design with the mainstream mechanical keyboards currently on the market, and the overall look and feel is also quite cool.
接下来说说设计&做工
The Rapoo V700DIY adopts the mainstream 104-key layout, with its own number keys, which can meet my needs for digital input.
In terms of the overall size, it can be said that the Rapoo V700DIY is well controlled, the keys are in place, loose and easy to tap. The separated key line design makes it more convenient for me to store and carry it.
In terms of materials, the shell of Rapoo V700DIY is made of PVC material and covered with a layer of aluminum alloy. It can be said to be very solid and durable. It also adds the texture of the keyboard and improves the appearance.
In the protruding part of the upper right corner, 5 shortcut keys are designed, M mode switching key, V1 lighting mode key, V2 scroll wheel mode switching key, V3 mute key and scroll wheel, which makes the user's operation of Rapoo V700DIY more convenient and quick . How to use it? How it works, please read below.
The ex-factory shaft of Rapoo V700DIY is the KA-12 linear fast silver shaft developed by Rapoo itself, with full key and no impact, calibration factory moist satellite shaft, with 45±10gf trigger pressure, 1.3±0.5mm trigger stroke and 50 million times As for the button life, Rapoo V700DIY dared to release the experimental data, which shows that the background color is very strong, and it is difficult to wear it out under normal use. I would also like to remind everyone here that products that dare not release data are most likely the products of small workshops. Whoever buys them will suffer losses, and whoever uses them will go crazy.
In addition, the Rapoo V700DIY adopts a 10,000-time hot-swappable metal shaft seat design scheme, which supports 104-key hot-swappable, allowing me to customize my own according to my favorite feel, color and sound. Two's exclusive mechanical keyboard, the playability is really the existence of YYDS.
To tell the truth, I am an old man who loves all kinds of things. Without a backlight, I am always drowsy and unable to cheer up. Rapoo V700DIY has its own 104-key Symphony RGB backlight. In the office mode, it has 18 kinds of monochrome lighting effects. In the game mode, it has 19 kinds of magic lighting effects, and supports adjustable brightness. It's very cool and can directly fill up the atmosphere.
In this way, the Pennefather V700DIY can make me more energetic, and I won’t get tired after playing for a long time. I like it very much.
In the use of keycaps, the Rapoo V700DIY keyboard uses PBT two-color keycaps. The keycap characters are well-designed, there is no ink overflow, the texture is matte, the touch is refreshing, it is not easy to decolorize and not oily. From my use in the past 10 days , still beautiful as new. This shows that the workmanship of Rapoo V700DIY can stand the test.
At the same time, in terms of stability, the back of the Rapoo V700DIY is designed with 5 well-distributed silicone pads, which can make the keyboard stay more stable on the desktop without slipping. At the same time, it also designs inclined foot pads, which can make the keyboard fit better through adjustment. The arc of the user's wrist makes tapping more comfortable and durable.
Okay, let’s talk about the specific experience of Pennefather V700DIY~
I first connected the computer to the Pennefather V700DIY keyboard with a Type-C cable, and then typed a paragraph of text on the keyboard. It can be said that the hand feels smooth and easy to trigger, the feedback is clear and the sound is crisp, straight up and down without a sense of paragraph, and the response is entered quickly. Fast, the overall experience can be said to be very comfortable. In e-sports games, the Rapoo V700DIY has a full feel and quick feedback.
In terms of shaft replacement experience, whether it is pulling out keys or shafts, it can be said that the damping is moderate and will not be loose. The replacement process is also very simple and easy. It can be seen that the difficulty of replacement is quite low. Even novices can DIY one. Desirable mechanical keyboards to meet different needs such as office and games.
In terms of shortcut experience, through the combined setting of Fn+F1~F12, 12 shortcut functions such as forward, backward, home page, mailbox, my computer, etc. can be realized, which makes my computer operation more efficient.
At the same time, through software settings, Rapoo V700DIY also supports 104-key programmable, 104-key non-conflict, onboard storage and cloud storage custom settings, etc., which can better cater to my usage habits and combo operations in games Wait, let my office and games more handy.
In general, Rapoo V700DIY is an excellent gaming keyboard, which fully considers the needs and usage habits of users in all aspects from appearance to functions. At the same time, it provides rich customization options and strong compatibility. It can be said that it has brought me a very cool input and operation experience during use. If you are looking for an easy-to-use gaming keyboard, you might as well try Rapoo V700DIY, I believe you will fall in love with it, and your productivity will also increase in a straight line!
Factory Adress: No.11,FengpingRoad
