The inverted black triangle is a "pause sign".

related introduction:

1. pause mark:

mark the note with a triangle symbol, indicating that the note should be sung (played) short and jump.

2. accent marks:

use ">" Or "□" or "sf" is marked on the top of the note, indicating that the note should be sung (played) strongly. When ">" When it appears together with the "□" symbol, it means stronger.

Extended information

Related symbols:

1. Tone-keeping symbol:

indicates that this tone should be kept at a sufficient duration and a certain volume when singing (playing).

2. Termination line:

The termination line is at the end of the music, where it is about to end. Here, you can't simply draw a bar line, but distinguish it from the general bar line. This representation method is to use two vertical lines, one of which is thin, one is thick and parallel, and the thin one is in front and the thick one is behind. This is called the "termination line", indicating that the music is over.

3. Ventilation number:

It is marked with "V". Means to take a breath here.

4. Section lines:

Dividing each section with vertical lines is called section lines.

Baidu Encyclopedia-Brief Music