The roll call of a note has seven tones and three expressions, namely:

First, the "volume name" of the European and American alphabet takes the first letter of Pinyin, and the seventh letter is changed to "ladder t i" because it is repeated: D, R, M, F, S, L and T.

Second, the English pinyin for "roll" is:

do、re、mi、fa、sol、la、si？

Third, Chinese pronunciation:

Duo, Lai, Mi, Fa, Suo, La and He

Extended data:

Roll call is a written record of music. Although the recording methods are different, the purpose of expression is the same. The changes in music represented by sound spectrum mainly include the level of sound and the length of sound.

When a written symbol becomes a person's singing, we must first read the singing score. A beginner can only sing and play the piano if he can sing the score first, which involves "roll call", that is, score → notes → "roll call", in which the notes bear the roll call and the notes are closely related to the roll call.