Chord Progression Builder
Select chords, hear playback, explore related progressions, and transpose to any key. Visualize on piano or guitar.
Launch Tool →EmbedMelody Playground
Piano roll interface for composing melodies. Place notes on a grid, adjust timing and velocity, preview with different instrument sounds.
In developmentDrum Pattern Builder
Step sequencer for creating drum patterns. Program kick, snare, hi-hat, and percussion with classic drum machine workflow.
In developmentArpeggio Generator
Generate arpeggios from any chord. Choose pattern direction (up, down, random), speed, and note rhythm. Export as MIDI.
In developmentHarmony Explorer
Visualize chord relationships, discover substitutions, and experiment with reharmonization. See how chords connect across keys.
In developmentKey Modulation Tool
Plan key changes in your compositions. Discover pivot chords, smooth modulation paths, and relative key relationships.
In developmentCreate Music Directly in Your Browser
Most music creation requires expensive DAW software or dedicated hardware. We're building a complete suite of browser-based creation tools that let you compose, arrange, and experiment with musical ideas — no downloads, no installations, no cost.
Each tool is designed to work standalone and in combination. Build a chord progression in the progression builder, send it to the arpeggio generator for inspiration, then compose a melody on top using the melody playground. Export your ideas or save them for later sessions.
Available Now
The Chord Progression Builder is live — select any key, build progressions, and hear them played back. Next up: Drum Pattern Builder (building on the existing drum kit) and Melody Playground (powered by the piano engine).