The speed sign is the speed of music, that is, the speed of playing (singing). It is of great significance to the style and content of music. Speed marks are written in Chinese and Italian, usually at the beginning of music. The tempo marks are generally in Italian, which can be referred to as metronome tempo, indicating how many beats per minute, but in actual performance, it should be decided according to the specific situation, and the commonly used ones are arranged from slow to fast.
marks of speed marks
Grave (slow speed), Largo (slightly slow speed), Lento (slow speed), Adagio (slow speed), Adagio (small Adagietto) and Larghetto (slow speed). Moderato (medium speed), Allegretto (slightly faster), Allegro (fast), fast and lively.
Vivace, Presto, Prestissimo, ATempo, Rubato, gradually slow (Ritardando/rit/ritard), suddenly slow (Ritenuto/riten), gradually slow Slightly slow (pocomenomosso), gradually fast (accelerando/accel.), slightly fast (pocopiùmosso), free speed (or loose board) (adlibitum/adlib).