#4567 Google Antigravity Generated App to Create Music

#4567 Google Antigravity Generated App to Create Music

https://ai-music-co-pilot-749372904567.us-west1.run.app/

#4567 Create 8 varying stanzas of a strong, anthemic, high-tempo, upbeat workout song

AI Co-Pilot Status

Here is a high-energy, 8-part workout anthem at 145 BPM. The track builds dynamically over 32 bars, starting with a simple kick and hi-hat beat. It then layers in a driving FM bass synth, followed by rhythmic synth chords, and finally unleashes a catchy, anthemic lead melody for the chorus sections. The piece moves through different verses, a pre-chorus, a brief breakdown, and a powerful final chorus to keep the energy high.

Tone.Transport.bpm.value = 145;


// A master compressor helps glue the sounds together for a punchier, more cohesive mix.

const masterComp = new Tone.Compressor(-12, 4).toDestination();

window.activeMusicNodes.push(masterComp);


// --- INSTRUMENTS ---

// A punchy kick drum using MembraneSynth

const kick = new Tone.MembraneSynth({

  pitchDecay: 0.05,

  octaves: 10,

  oscillator: { type: 'sine' },

  envelope: {

    attack: 0.001,

    decay: 0.4,

    sustain: 0.01,

    release: 1.4,

    attackCurve: 'exponential'

  }

}).connect(masterComp);

window.activeMusicNodes.push(kick);


// A crisp snare sound from a NoiseSynth

const snare = new Tone.NoiseSynth({

  noise: { type: 'white' },

  envelope: {

    attack: 0.005,

    decay: 0.15,

    sustain: 0.05,

    release: 0.2

  }

}).connect(masterComp);

window.activeMusicNodes.push(snare);


// Metallic hi-hats for a classic electronic feel

const hihat = new Tone.MetalSynth({

  frequency: 200,

  envelope: { attack: 0.001, decay: 0.1, release: 0.01 },

  harmonicity: 5.1,

  modulationIndex: 32,

  resonance: 4000,

  octaves: 1.5

}).connect(masterComp);

hihat.volume.value = -12;

window.activeMusicNodes.push(hihat);


// A powerful and driving FM synthesizer for the bassline

const bass = new Tone.FMSynth({

  harmonicity: 3.1,

  modulationIndex: 10,

  oscillator: { type: "sine" },

  envelope: { attack: 0.01, decay: 0.2, sustain: 0.3, release: 0.5 },

  modulation: { type: "square" },

  modulationEnvelope: { attack: 0.01, decay: 0.1, sustain: 0.5, release: 0.1 }

}).connect(masterComp);

bass.volume.value = -4;

window.activeMusicNodes.push(bass);


// A rich polyphonic synth for the lead melody and chords, with a chorus effect for width

const chorus = new Tone.Chorus(4, 2.5, 0.5).connect(masterComp);

const leadSynth = new Tone.PolySynth(Tone.Synth, {

  oscillator: { type: 'sawtooth' },

  envelope: { attack: 0.02, decay: 0.5, sustain: 0.2, release: 0.4 }

}).connect(chorus);

leadSynth.volume.value = -8;

window.activeMusicNodes.push(chorus);

window.activeMusicNodes.push(leadSynth);


// --- MUSICAL PARTS ---

// The entire 32-bar drum sequence, evolving through 8 stanzas

const drumPart = new Tone.Part((time, value) => {

  if (value.note === 'C1') kick.triggerAttackRelease(value.note, '8n', time);

  if (value.note === 'C2') snare.triggerAttackRelease('8n', time);

  if (value.note === 'C3') hihat.triggerAttackRelease('16n', time, 0.6);

}, [

  // Stanza 1 (Bars 0-3): Intro with Kick & Hi-hat

  ...Array(4).fill(0).flatMap((_, i) => [

    { time: `${i}:0:0`, note: 'C1' }, { time: `${i}:0:0`, note: 'C3' },

    { time: `${i}:1:0`, note: 'C3' }, { time: `${i}:1:2`, note: 'C1' },

    { time: `${i}:2:0`, note: 'C1' }, { time: `${i}:2:0`, note: 'C3' },

    { time: `${i}:3:0`, note: 'C3' }, { time: `${i}:3:2`, note: 'C1' },

  ]),

  // Stanza 2 & 3 (Bars 4-11): Add Snare for the main beat

  ...Array(8).fill(0).flatMap((_, i) => [

    { time: `${4+i}:0:0`, note: 'C1' }, { time: `${4+i}:0:0`, note: 'C3' },

    { time: `${4+i}:1:0`, note: 'C2' }, { time: `${4+i}:1:0`, note: 'C3' },

    { time: `${4+i}:2:0`, note: 'C1' }, { time: `${4+i}:2:0`, note: 'C3' },

    { time: `${4+i}:3:0`, note: 'C2' }, { time: `${4+i}:3:0`, note: 'C3' },

  ]),

  // Stanza 4 (Bars 12-15): Pre-Chorus with 16th-note hi-hats for energy

  ...Array(4).fill(0).flatMap((_, i) => [

    { time: `${12+i}:0:0`, note: 'C1' }, { time: `${12+i}:0:0`, note: 'C3' }, { time: `${12+i}:0:2`, note: 'C3' },

    { time: `${12+i}:1:0`, note: 'C2' }, { time: `${12+i}:1:0`, note: 'C3' }, { time: `${12+i}:1:2`, note: 'C3' },

    { time: `${12+i}:2:0`, note: 'C1' }, { time: `${12+i}:2:0`, note: 'C3' }, { time: `${12+i}:2:2`, note: 'C3' },

    { time: `${12+i}:3:0`, note: 'C2' }, { time: `${12+i}:3:0`, note: 'C3' }, { time: `${12+i}:3:2`, note: 'C3' },

  ]),

  // Stanza 5 (Bars 16-19): Chorus with an extra kick for drive

  ...Array(4).fill(0).flatMap((_, i) => [

    { time: `${16+i}:0:0`, note: 'C1' }, { time: `${16+i}:0:0`, note: 'C3' }, { time: `${16+i}:0:2`, note: 'C3' },

    { time: `${16+i}:1:0`, note: 'C2' }, { time: `${16+i}:1:0`, note: 'C3' }, { time: `${16+i}:1:2`, note: 'C3' },

    { time: `${16+i}:2:0`, note: 'C1' }, { time: `${16+i}:2:0`, note: 'C3' }, { time: `${16+i}:2:2`, note: 'C3' }, { time: `${16+i}:2:3`, note: 'C1' },

    { time: `${16+i}:3:0`, note: 'C2' }, { time: `${16+i}:3:0`, note: 'C3' }, { time: `${16+i}:3:2`, note: 'C3' },

  ]),

  // Stanza 6 (Bars 20-23): Verse 2, a slight variation of the main beat

  ...Array(4).fill(0).flatMap((_, i) => [

    { time: `${20+i}:0:0`, note: 'C1' }, { time: `${20+i}:0:0`, note: 'C3' },

    { time: `${20+i}:1:0`, note: 'C2' }, { time: `${20+i}:1:0`, note: 'C3' },

    { time: `${20+i}:2:0`, note: 'C1' }, { time: `${20+i}:2:0`, note: 'C3' }, { time: `${20+i}:2:3`, note: 'C1' },

    { time: `${20+i}:3:0`, note: 'C2' }, { time: `${20+i}:3:0`, note: 'C3' },

  ]),

  // Stanza 7 (Bars 24-27): Bridge/Breakdown, stripping it down to kick and hat

  ...Array(4).fill(0).flatMap((_, i) => [

    { time: `${24+i}:0:0`, note: 'C1' }, { time: `${24+i}:1:0`, note: 'C3' },

    { time: `${24+i}:2:0`, note: 'C1' }, { time: `${24+i}:3:0`, note: 'C3' },

  ]),

  // Stanza 8 (Bars 28-31): Final Chorus, full energy

  ...Array(4).fill(0).flatMap((_, i) => [

    { time: `${28+i}:0:0`, note: 'C1' }, { time: `${28+i}:0:0`, note: 'C3' }, { time: `${28+i}:0:2`, note: 'C3' },

    { time: `${28+i}:1:0`, note: 'C2' }, { time: `${28+i}:1:0`, note: 'C3' }, { time: `${28+i}:1:2`, note: 'C3' },

    { time: `${28+i}:2:0`, note: 'C1' }, { time: `${28+i}:2:0`, note: 'C3' }, { time: `${28+i}:2:2`, note: 'C3' }, { time: `${28+i}:2:3`, note: 'C1' },

    { time: `${28+i}:3:0`, note: 'C2' }, { time: `${28+i}:3:0`, note: 'C3' }, { time: `${28+i}:3:2`, note: 'C3' },

  ]),

]).start(0);

window.activeMusicNodes.push(drumPart);


// The bassline, which enters after the intro and varies by section

const bassPart = new Tone.Part((time, value) => {

  bass.triggerAttackRelease(value.note, value.duration, time);

}, [

  // Stanza 2 & 3: Simple root note progression

  { time: '4:0', note: 'C2', duration: '2n' }, { time: '5:0', note: 'G1', duration: '2n' },

  { time: '6:0', note: 'Ab1', duration: '2n' }, { time: '7:0', note: 'Eb2', duration: '2n' },

  { time: '8:0', note: 'C2', duration: '2n' }, { time: '9:0', note: 'G1', duration: '2n' },

  { time: '10:0', note: 'Ab1', duration: '2n' }, { time: '11:0', note: 'Eb2', duration: '2n' },

  // Stanza 4: More active quarter-note rhythm

  { time: '12:0', note: 'C2', duration: '4n' }, { time: '12:2', note: 'C2', duration: '4n' },

  { time: '13:0', note: 'G1', duration: '4n' }, { time: '13:2', note: 'G1', duration: '4n' },

  { time: '14:0', note: 'Ab1', duration: '4n' }, { time: '14:2', note: 'Ab1', duration: '4n' },

  { time: '15:0', note: 'Eb2', duration: '4n' }, { time: '15:2', note: 'Eb2', duration: '4n' },

  // Stanza 5 & 6: Main chorus/verse progression

  { time: '16:0', note: 'C2', duration: '2n' }, { time: '17:0', note: 'G1', duration: '2n' },

  { time: '18:0', note: 'Ab1', duration: '2n' }, { time: '19:0', note: 'Eb2', duration: '2n' },

  { time: '20:0', note: 'C2', duration: '2n' }, { time: '21:0', note: 'G1', duration: '2n' },

  { time: '22:0', note: 'Ab1', duration: '2n' }, { time: '23:0', note: 'Eb2', duration: '2n' },

  // Stanza 7: Held notes for the breakdown

  { time: '24:0', note: 'C2', duration: '1n' }, { time: '26:0', note: 'Ab1', duration: '1n' },

  // Stanza 8: Final chorus progression

  { time: '28:0', note: 'C2', duration: '2n' }, { time: '29:0', note: 'G1', duration: '2n' },

  { time: '30:0', note: 'Ab1', duration: '2n' }, { time: '31:0', note: 'Eb2', duration: '2n' },

]).start(0);

window.activeMusicNodes.push(bassPart);


// The lead synth part, containing both chords and the main melody

const leadPart = new Tone.Part((time, value) => {

  leadSynth.triggerAttackRelease(value.note, value.duration, time);

}, [

  // Stanza 4: Rhythmic chords to build tension

  { time: '12:0', note: ['C4', 'Eb4', 'G4'], duration: '8n' }, { time: '12:2', note: ['C4', 'Eb4', 'G4'], duration: '8n' },

  { time: '13:0', note: ['G3', 'Bb3', 'D4'], duration: '8n' }, { time: '13:2', note: ['G3', 'Bb3', 'D4'], duration: '8n' },

  { time: '14:0', note: ['Ab3', 'C4', 'Eb4'], duration: '8n' }, { time: '14:2', note: ['Ab3', 'C4', 'Eb4'], duration: '8n' },

  { time: '15:0', note: ['Eb4', 'G4', 'Bb4'], duration: '8n' }, { time: '15:2', note: ['Eb4', 'G4', 'Bb4'], duration: '8n' },

  // Stanza 5: The main anthemic chorus melody

  { time: '16:0', note: 'G4', duration: '8n' }, { time: '16:0:2', note: 'G4', duration: '8n' }, { time: '16:1', note: 'Ab4', duration: '4n' }, { time: '16:2', note: 'G4', duration: '4n' }, { time: '16:3', note: 'F4', duration: '4n' },

  { time: '17:0', note: 'Eb4', duration: '2n.' },

  { time: '18:0', note: 'G4', duration: '8n' }, { time: '18:0:2', note: 'G4', duration: '8n' }, { time: '18:1', note: 'Ab4', duration: '4n' }, { time: '18:2', note: 'G4', duration: '4n' }, { time: '18:3', note: 'F4', duration: '4n' },

  { time: '19:0', note: 'Eb4', duration: '2n.' },

  // Stanza 6: Back to rhythmic chords for the second verse

  { time: '20:0', note: ['C4', 'Eb4', 'G4'], duration: '8n' }, { time: '20:2', note: ['C4', 'Eb4', 'G4'], duration: '8n' },

  { time: '21:0', note: ['G3', 'Bb3', 'D4'], duration: '8n' }, { time: '21:2', note: ['G3', 'Bb3', 'D4'], duration: '8n' },

  { time: '22:0', note: ['Ab3', 'C4', 'Eb4'], duration: '8n' }, { time: '22:2', note: ['Ab3', 'C4', 'Eb4'], duration: '8n' },

  { time: '23:0', note: ['Eb4', 'G4', 'Bb4'], duration: '8n' }, { time: '23:2', note: ['Eb4', 'G4', 'Bb4'], duration: '8n' },

  // Stanza 8: Final chorus melody, played an octave higher for maximum impact

  { time: '28:0', note: 'G5', duration: '8n' }, { time: '28:0:2', note: 'G5', duration: '8n' }, { time: '28:1', note: 'Ab5', duration: '4n' }, { time: '28:2', note: 'G5', duration: '4n' }, { time: '28:3', note: 'F5', duration: '4n' },

  { time: '29:0', note: 'Eb5', duration: '2n.' },

  { time: '30:0', note: 'G5', duration: '8n' }, { time: '30:0:2', note: 'G5', duration: '8n' }, { time: '30:1', note: 'Ab5', duration: '4n' }, { time: '30:2', note: 'G5', duration: '4n' }, { time: '30:3', note: 'F5', duration: '4n' },

  { time: '31:0', note: 'Eb5', duration: '2n.' },

]).start(0);

window.activeMusicNodes.push(leadPart);


From <https://ai-music-co-pilot-749372904567.us-west1.run.app/>  Google AI Studio

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