# Arpeggio part of Starlight by Muse @low_range def arp(): if is_sixteenth_note: if notes_hit_x("x-x", relative_bar): note = pick_note(is_ascending=True) if notes_hit_x("-x-x", relative_bar): note = pick_note(is_ascending=False) play(note, release=0.25, velocity=60) def pick_note(is_ascending): if previous_note == None: return root elif is_ascending: return get_higher_in_chord(previous_note) else: return get_lower_in_chord(previous_note) def drums(): if notes_hit_x("x--x-x-x", eight_notes): play(BASS_DRUM) if is_quarter_note: play(ACOUSTIC_SNARE) play(OPEN_HI_HAT) if is_beginning_of_bar(): play(CRASH_CYMBAL_1) if notes_hit_x("-x-x", quarter_notes): play(HAND_CLAP) def low_intensity_drums(): if bar == 0 and is_beginning_of_bar(): play(BASS_DRUM) if is_eight_note: play(RIDE_CYMBAL_1) @low_range def bass(): if is_eight_note: play(root) chorus_part_1 = (('C#m', 4), ('F#', 4), ('D#', 4), ('G#m', 4), ('A', 4), ('E', 4), ('A', 4), ('D#', 4)) chorus_part_2 = (('G#m', 4), ('D#', 4), ('E', 4), ('B', 4)) chorus_last_part = (('G#m', 4), ('D#', 4), ('E', 4), ('F#7', 4)) PARTS = [ [chorus_part_1, [arp, drums, bass]], [chorus_part_2, [arp, low_intensity_drums, None]], [chorus_last_part, [arp, drums, bass]] ] TRACK_INSTRUMENTS = [Instrument.LEAD_8_BASS_LEAD, Instrument.DRUMS, Instrument.ELECTRIC_BASS_FINGER] BPM = 122

Pattern Composer

Write code in the editor below and click run when you want to run the code. A midi file will appear if the code was valid, otherwise an error message is shown. To successfully run the program a valid song structure object needs to be assigned to the reserved variable PARTS. To get an overview of syntax and features, look at the docs here.

NOTE: refreshing the browser will reset the code. Sound generation and visualization is done with html-midi-player