What do the black keys on the piano mean?

The black keys on the piano are used to play with varying levels.

black keys is a black key in the piano keyboard, which is located on the upper, 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.

First, the staff

In the staff, the changing tone level does not necessarily represent black keys, but the black keys can only be represented by changing tone level.

black keys in the staff: xB=#C=bD, #D=bE=bbF, xE=#F=bG, #G=bA, #A=bB=bbC

Second, white spectrum

In white spectrum, the changing tone level must represent black keys, and black keys can only be represented by changing tone level.

black keys in the white spectrum: #C=bD, #D=bE, #F=bG, #G=bA, #A=bB

Extended information:

The whole piano keys are composed of black keys and white keys. Black keys 36, 52 white keys, ***88.

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

grand piano and upright piano have the same basic structure. Consists of six parts: string array, soundboard, bracket, keyboard system (including black and white keys and percussion pestle, ***88 keys), pedal machinery (including ejector pin and pedal) and shell.

Baidu Encyclopedia-Piano

Baidu Encyclopedia-black keys.