The symbol of seven sounds in the notation is 1234567.

from low to high, it is 1234567.

The treble is added above the notes. The more points, the higher the notes. The bass is added below the notes. The more points, the lower the notes.

according to the high and low order of the basic tones, write one tone at a time, starting from A and going up and down, until the homonym appears. A C E G B D F A A F D B G E C A 5. Write all the sounds that may form a semitone with C (including the basic level and the changing level; Up and down) c-# c c-b d c-x b c-b c-x a c-b c?

Extended information:

The first, second, third and fourth lines of the treble staff are la, do, mi and sol respectively, and the first, second, third and fourth lines of copy are do, la, fa and re respectively.

The first, second, third and fourth lines on the bass staff are do, mi, sol and xi respectively, and the first, second, third and fourth lines are mi, do, la and fa respectively.

every hundred lines in the staff and the space between lines are called the first line, the second line, the third line, the fourth line, the fifth line and the first room, the second room, the third room and the fourth room from bottom to top.

the additional line and the additional room are called the first line and the first room respectively; Add the first line below and the first room below, each representing one level. The fixed height of these steps depends on the clef used.