Music 1, 2, 3, 4, 5, 6, and 7 are pronounced do, re, mi, fa, sol, la, and si.

In simplified musical notation, the symbols that record the pitch and length of sounds are musical notes. The symbols used to represent the heights of these dominant sounds are marked with seven Arabic numerals.

They are written as:

1, 2, 3, 4, 5, 6, 7.

Their pronunciation is:

do, re, mi, fa, sol, la, si (Duo, Lai, Mi, Fa, Suo, La, Xi).

Notes are closely connected with pitch, and there is no note without pitch.

Extended information:

The movable solfa method is based on relative pitch, and its solfa is not fixed. It is based on key differences. In major keys, do, re, mi, Fa, so, la, and ti are fixed. For example, in C major, do is sung with C sound, in D major, do is sung with D sound, etc. Sing la, ti, do, re, mi, fa, sol in minor keys, such as la in A minor, la in B minor, etc.

Chinese national folk music also uses fixed and movable Two solfa methods. In the Song Dynasty, both Gongchi Pu and Common Zi Pu were notated using the fixed solfa method. The musical notation used in the ancient folk music Xi'an Drum Music that is preserved today is the inheritance and development of the folk calligraphy notation of the Song Dynasty, and it also belongs to the fixed solfa system.

Various musical notations are just expressed in different forms. A sound will have different notes in different music scores, and it can be sung into different "roll calls" by different people according to their habits, but the sound you want to sing can only be this one.

Baidu Encyclopedia-Simplified Musical Score