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217 lines
6.5 KiB
Python
217 lines
6.5 KiB
Python
"""Play melodies and chord progressions with PyTheory.
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Requires PortAudio: brew install portaudio (macOS)
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"""
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from pytheory import Tone, Chord, Key, TonedScale, play, Synth
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# ── Helpers ─────────────────────────────────────────────────────────────
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BPM = 180
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BEAT = 60_000 // BPM # ms per beat
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def play_melody(notes, synth=Synth.SINE):
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"""Play a sequence of (note_string, beats) tuples."""
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try:
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for note, beats in notes:
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if note == "REST":
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import time
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time.sleep(beats * BEAT / 1000)
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else:
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tone = Tone.from_string(note, system="western")
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play(tone, synth=synth, t=int(beats * BEAT))
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except KeyboardInterrupt:
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print("\n Stopped.")
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def play_progression(chords, beats_each=2, synth=Synth.SINE):
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"""Play a list of Chord objects."""
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try:
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for chord in chords:
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name = chord.identify() or "?"
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tones = " ".join(t.full_name for t in chord.tones)
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print(f" {name:20s} {tones}")
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play(chord, synth=synth, t=int(beats_each * BEAT))
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except KeyboardInterrupt:
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print("\n Stopped.")
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# ── Songs ───────────────────────────────────────────────────────────────
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def twinkle_twinkle():
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"""Twinkle Twinkle Little Star — C major."""
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print("Twinkle Twinkle Little Star")
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print("=" * 40)
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melody = [
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# Twinkle twinkle little star
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("C4", 1), ("C4", 1), ("G4", 1), ("G4", 1),
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("A4", 1), ("A4", 1), ("G4", 2),
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# How I wonder what you are
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("F4", 1), ("F4", 1), ("E4", 1), ("E4", 1),
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("D4", 1), ("D4", 1), ("C4", 2),
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# Up above the world so high
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("G4", 1), ("G4", 1), ("F4", 1), ("F4", 1),
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("E4", 1), ("E4", 1), ("D4", 2),
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# Like a diamond in the sky
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("G4", 1), ("G4", 1), ("F4", 1), ("F4", 1),
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("E4", 1), ("E4", 1), ("D4", 2),
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# Twinkle twinkle little star
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("C4", 1), ("C4", 1), ("G4", 1), ("G4", 1),
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("A4", 1), ("A4", 1), ("G4", 2),
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# How I wonder what you are
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("F4", 1), ("F4", 1), ("E4", 1), ("E4", 1),
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("D4", 1), ("D4", 1), ("C4", 2),
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]
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play_melody(melody)
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def ode_to_joy():
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"""Ode to Joy — Beethoven's 9th Symphony, D major."""
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print("Ode to Joy (Beethoven)")
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print("=" * 40)
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melody = [
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# Main theme
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("F#4", 1), ("F#4", 1), ("G4", 1), ("A4", 1),
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("A4", 1), ("G4", 1), ("F#4", 1), ("E4", 1),
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("D4", 1), ("D4", 1), ("E4", 1), ("F#4", 1),
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("F#4", 1.5), ("E4", 0.5), ("E4", 2),
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# Repeat with variation
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("F#4", 1), ("F#4", 1), ("G4", 1), ("A4", 1),
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("A4", 1), ("G4", 1), ("F#4", 1), ("E4", 1),
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("D4", 1), ("D4", 1), ("E4", 1), ("F#4", 1),
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("E4", 1.5), ("D4", 0.5), ("D4", 2),
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]
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play_melody(melody)
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def happy_birthday():
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"""Happy Birthday — G major."""
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print("Happy Birthday")
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print("=" * 40)
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melody = [
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# Happy birthday to you
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("G4", 0.75), ("G4", 0.25), ("A4", 1), ("G4", 1),
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("C5", 1), ("B4", 2),
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# Happy birthday to you
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("G4", 0.75), ("G4", 0.25), ("A4", 1), ("G4", 1),
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("D5", 1), ("C5", 2),
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# Happy birthday dear [name]
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("G4", 0.75), ("G4", 0.25), ("G5", 1), ("E5", 1),
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("C5", 1), ("B4", 1), ("A4", 2),
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# Happy birthday to you
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("F5", 0.75), ("F5", 0.25), ("E5", 1), ("C5", 1),
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("D5", 1), ("C5", 2),
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]
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play_melody(melody)
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def fur_elise():
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"""Fur Elise — opening bars (A minor)."""
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print("Fur Elise (opening)")
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print("=" * 40)
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melody = [
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("E5", 0.5), ("D#5", 0.5), ("E5", 0.5), ("D#5", 0.5),
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("E5", 0.5), ("B4", 0.5), ("D5", 0.5), ("C5", 0.5),
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("A4", 1), ("REST", 0.5),
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("C4", 0.5), ("E4", 0.5), ("A4", 0.5),
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("B4", 1), ("REST", 0.5),
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("E4", 0.5), ("G#4", 0.5), ("B4", 0.5),
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("C5", 1), ("REST", 0.5),
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("E4", 0.5), ("E5", 0.5), ("D#5", 0.5),
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("E5", 0.5), ("D#5", 0.5), ("E5", 0.5), ("B4", 0.5),
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("D5", 0.5), ("C5", 0.5),
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("A4", 1),
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]
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play_melody(melody)
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def pop_progression():
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"""The I–V–vi–IV pop progression in C major."""
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print("Pop Progression (I-V-vi-IV in C)")
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print("=" * 40)
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print()
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key = Key("C", "major")
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chords = key.progression("I", "V", "vi", "IV")
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# Play it twice
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play_progression(chords * 2)
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def blues_in_a():
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"""12-bar blues in A."""
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print("12-Bar Blues in A")
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print("=" * 40)
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print()
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key = Key("A", "major")
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I = key.triad(0)
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IV = key.triad(3)
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V = key.triad(4)
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bars = [I, I, I, I, IV, IV, I, I, V, IV, I, V]
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play_progression(bars, beats_each=1.5)
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def jazz_ii_v_i():
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"""Jazz ii–V–I turnaround through several keys."""
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print("Jazz ii-V-I Turnaround")
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print("=" * 40)
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print()
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for tonic in ["C", "F", "Bb", "Eb"]:
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key = Key(tonic, "major")
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chords = key.progression("ii", "V", "I")
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print(f" Key of {tonic}:")
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play_progression(chords, beats_each=1.5)
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print()
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# ── Main ────────────────────────────────────────────────────────────────
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SONGS = {
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"1": ("Twinkle Twinkle Little Star", twinkle_twinkle),
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"2": ("Ode to Joy", ode_to_joy),
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"3": ("Happy Birthday", happy_birthday),
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"4": ("Fur Elise (opening)", fur_elise),
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"5": ("Pop Progression (I-V-vi-IV)", pop_progression),
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"6": ("12-Bar Blues in A", blues_in_a),
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"7": ("Jazz ii-V-I Turnaround", jazz_ii_v_i),
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}
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if __name__ == "__main__":
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try:
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print("PyTheory Song Player")
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print("=" * 40)
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print()
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for key, (name, _) in SONGS.items():
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print(f" {key}. {name}")
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print()
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choice = input("Pick a song (1-7, or 'all'): ").strip()
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if choice == "all":
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for _, (_, fn) in SONGS.items():
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fn()
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print()
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elif choice in SONGS:
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SONGS[choice][1]()
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else:
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print("Playing all melodies...")
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for _, (_, fn) in SONGS.items():
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fn()
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print()
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except KeyboardInterrupt:
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print("\n\nBye!")
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