Figures in brackets after recruitment positions

The numbers in brackets are preludes or interludes, that is, the part without lyrics in front of a song, or the part with accompaniment without lyrics in the middle.

1, notation is a simple notation. There are two kinds of letter symbols and number symbols. It originated in France in the18th century and was improved by the Germans, so it became what it is today. The so-called music score generally refers to digital music score.

2. Digital notation is based on the moving roll call method, where 1, 2, 3, 4, 5, 6, 7 represent the seven basic levels in the scale, pronounced as do, re, mi, fa, sol, la, si, and the rest are represented by O. The sound length name of each number is equivalent to the quarter note of the staff.