Beats per minute
Create a time signature at the specified time. If there is already a time signature at this time, it will be replaced.
top number of the time signature
bottom number of the time signature
measure number at which to insert the time signature, indexed from 1 (not 0).
Create a time signature at the specified time. If there is already a time signature at this time, it will be replaced.
top number of the time signature
bottom number of the time signature
time at which to insert the time signature
Set the tempo at the beginning of the project