Common music notation tempo indications.
A tempo marking is in terms of a common music notation
Duration of a RQ value, in seconds, given indicated tempo.
rq_to_seconds (quarter_note,90) 1 == 60/90
The duration, in seconds, of a pulse at the indicated time signature and tempo marking.
import Music.Theory.Duration.Name pulse_duration (6,8) (quarter_note,60) == 1/2
The duration, in seconds, of a measure at the indicated time signaure and tempo marking.
measure_duration (3,4) (quarter_note,90) == 2 measure_duration (6,8) (quarter_note,120) == 3/2