Do re mi fa so la si.

The symbols that record music are called notes.

When we sing or play musical instruments, we use musical notation, and the musical notes are represented by seven Arabic numerals:

1 2 3 4 5 6 7

Note name: ?C D E F G A B

Extended information:

Division of notes:

There is a pattern among these seven notes, which is 3 (mi) to 4 (fa), 7 (si) to high 1 (do) are semitones. On the guitar, two adjacent frets are semitones. For example, the second fret of the fourth string is 3 (mi), then the third fret of the fourth string is 4 (fa). On the guitar, the second fret of the fourth string is a whole tone. For example, the third fret of the fifth string is 1 (do ), then the fifth string and fifth fret is 2 (re), separated by 1 fret.

Baidu Encyclopedia-Music Theory Knowledge