What is the musical definition for tempo?

Tempo (Italian for "time") is the speed or pace of a piece of music. It is usually measured in beats per minute (BPM). The tempo of a piece of music can be indicated in a number of ways, including:

- A metronome marking, such as "60 BPM"

- A note value, such as "quarter note = 120"

- A verbal indication, such as "allegro" (fast) or "adagio" (slow)

The tempo of a piece of music can have a significant impact on its mood and character. For example, a fast tempo can create a sense of excitement or urgency, while a slow tempo can create a sense of calm or relaxation. The tempo of a piece of music can also be used to create contrast, such as in a piece that begins slowly and then gradually increases in speed.