beats per measure can be either of the following:
- empty or
0 (no groups)
- one or more numbers separated by
+ e.g. 4, 2+3, 3+2+2
- space
- start/stop
- up
- increment tempo by 1 (when input not focused)
- down
- decrement tempo by 1 (when input not focused)
- left
- decrement tempo by 10 (when input not focused)
- right
- increment tempo by 10 (when input not focused)
- n
- halve tempo
- m
- double tempo
- j
- third tempo
- k
- triple tempo
- .
- tap
- b
- focus beats per measure
- t
- focus tempo
- u
- start/stop tuner
favicon by Andrea Verzola from the Noun Project