What does a key signature indicate?

(1 point)
Responses

what instruments to play the piece on
what instruments to play the piece on

what dynamic markings to use
what dynamic markings to use

what scale the composition is based on
what scale the composition is based on

what tempo to play the piece

A key signature indicates what scale the composition is based on. It tells the musician which sharps or flats will consistently appear throughout the piece, without having to write them next to each note. This helps in identifying the tonal center and the key in which the music is to be played.

So, the correct response from the options provided is:

what scale the composition is based on