Simulator: This function only works on the Calliope mini and in some browsers.
Change Tempo By
Makes the tempo (speed of a piece of music) faster or slower by the amount you say.
music.changeTempoBy(20)
Parameters
bpm
is a number that says how much to change the bpm (beats per minute, or number of beats in a minute of the music that the Calliope mini is playing).
Examples
This program makes the music faster by 12 bpm.
music.changeTempoBy(12)
This program makes the music slower by 12 bpm.
music.changeTempoBy(-12)