Black keys in electronic organ and piano, used to play variable levels; The black keys of electronic organ and piano need not be expressed in notation, and it has tonality.

Higher, shorter and narrower. There are 36 black keys keys in the 88 keys of the piano keyboard, and 5 black keys keys in each group of 12 keys. Black keys's play is basically the same as the white key.

In the staff, the level change does not necessarily represent black keys, but black keys can only be represented by the level change. In the white spectrum, the changing sound level must represent black keys, while black keys can only be represented by changing sound level.

Extended data

Modern pianos are mainly divided into upright pianos and grand piano in appearance.

Grand piano is the most primitive form of piano, which is usually used in concerts. This is a huge thing. In order to solve the problem of land occupation, upright piano was invented. Upright piano adopted the design scheme of staggered installation of strings, which effectively solved the balance between space requirements and timbre volume. As long as the space at home is small, you can put a upright piano.

Grand piano and upright piano have the same basic structure. It consists of a string array, a soundboard, a bracket, a keyboard system (including black and white keys and a percussion pestle, keys ***88), a pedal machine (including a top rod and a pedal) and a shell.

The piano has a wide range. Modern pianos generally have 88 keys, which can reach more than 7 octaves. Loud volume, rich timbre changes, can express all kinds of musical emotions, either rigid or soft, or urgent or slow. The treble is crisp, the midrange is full, and the bass is strong, which can imitate the effect of the whole symphony orchestra, so it has the title of "the king of musical instruments".

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