Basic syntax of tempo type

Contents

• Inserting real-time tempo changes into a piece

Inserting real-time tempo changes into a piece

A chord type's attribute tempos is a list containing tempo types. Each tempo type must have a specific start time, which makes the tempo of the piece to change dynamically while playing it.

The composition of tempo type

tempo(bpm, start_time=0, channel=None, track=None)

• bpm: the speed of the piece you want to change to
• start_time: the time at which you want to change position, in bars, can be an integer, decimal or fraction
• channel: MIDI channel number
• track: MIDI track number

insert the tempo type into the chord type

Insert the tempo type into the tempos list of the chord type.

a = chord(['C5', 'D5', 'E5', 'F5', 'G5', 'A5', 'B5', 'C6']) % (1/8,1/8)
a.tempos.append(tempo(bpm=150, start_time=3/8))
play(a, 80)
# The chord type a will be played at 80 BPM from the beginning to E5, and 150 BPM thereafter