A symbol that lowers a tone by two semitones (a whole tone). As far as physical pitch is concerned, the sharp drop of 2 is 1. It is indeed the same key on the keyboard. But in music, double drop 2 can't be regarded as 1, because patterns have different meanings.

In the staff, the rising and falling semitones should be written on the left side of the notes and in the same line position as the notes, and cannot be written in other positions, otherwise it will cause unnecessary misunderstanding.

There are two groups and three groups of black keys on the piano. do is in front of black keys and re is in the middle of two groups of black keys.

The roll names are do, re, mi, fa, sol, la and si in turn.

The corresponding phonetic names are c, d,? e，？ f，G，A，？ B

Extended data

Staff recording formula:

1, treble spectrum formula:

You sing 1, 2, 1, 2, 3, 5, 4, 4, 6, 5438+0 in the next line, 3 in the fourth room, 6, 1 3 in the first line, 5, 7 in the fourth line and 5, 5, 3.

2. Bass spectrum formula:

Add a line to sing 1 and a room to sing 7, 1, 2, 3, 5, 7, 2, 4, 5, 4, 6, 1, 2, 3. 6 1 3, please sing 5 in four rooms, and then add one, two, three lines? 3 1 6, four lines and five elements sing 4 2, add one or two rooms or three rooms? Four, two, seven, four rooms and five rooms sing five, three.

Direction: On the staff, the higher the sound, the more to the right on the keys. On the contrary, to the left is the relationship between the sound direction on the staff and the sound direction on the keyboard.

Baidu encyclopedia-heavy down number?