Create melodies on a step-grid. Click cells to enable notes, set tempo, choose scale/instrument, then press Play.
120 BPM
Quick Summary
The Melody Generator is a step-sequencer style tool for sketching musical ideas quickly. It supports selectable scales and roots, tempo control, and multiple oscillator voices to audition melodies in real-time.
How it works
This is a browser-based sequencer using the Web Audio API. The grid represents 12 pitch rows (one octave by default) and 16 step columns. Each column is a time step — when playback reaches a column, enabled notes in that column are sounded.
Playhead tempo = 60 ÷ BPM seconds per step (16 steps per bar by default)
Frequency formula (equal temperament):
freq = 440 * 2^((midi - 69) / 12)
This tool maps rows to MIDI notes (configurable via root & scale).
Examples & Tips
Choose Major + root C for bright, happy melodies.
Choose Minor for moodier, cinematic ideas.
Use Pentatonic to avoid dissonance — great for simple melodies.
Try different instruments (sine/saw/pluck) to find a sound that sits well in your track.
Use Cases
Sketch musical hooks quickly.
Create backing melodies for demos.
Generate MIDI ideas to export later (MIDI export planned).
Practice ear training by toggling between scales and roots.
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Frequently Asked Questions
Modern browsers require a user gesture to start audio. Click Play to resume audio context and allow sound playback.
This version produces live audio in-browser. MIDI/WAV export is possible and can be added — I can provide a version that generates downloadable MIDI or renders WAV client-side on request.
Use the Scale & Root selectors above the grid. The grid remaps pitches immediately, preserving which cells are active so you can quickly audition the same pattern in a new key.