Gradually getting quieter.

Two or more notes sounding simultaneously which create a harsh, unstable sound.

Played by more than one instrument or voice.

Loudness, measured in decibels, but perceived as relative loudness or quietness.

The shape or organisation of a piece of music.

Very loud.

A class, type or category of music that behaves according to specific conventions.

The combining of notes simultaneously.

A texture of several musical lines of similar rhythmic character.

The distance between two pitches.