A melodic step sequencer with a piano-roll grid. Pick a key and scale, click cells to place notes across 16 steps, and press play — the root note row is highlighted so you always know where home is.
Compose with zero bad notes. Pick C through B keys and choose Major, Minor, or Pentatonic scales to automatically filter and reconstruct grid rows.
Select synth tone oscillators, choosing between smooth Sines, warm Triangles, buzzy Sawtooths, or vintage arcade-style Square waves.
Instantly draft inspiration using the 'Random' button to draft randomized pattern densities across scale pitches, or clear everything using 'Clear'.
All sound synthesis is executed inside your local browser. There are no server dependencies or network uploads, ensuring lag-free operation.
Frequently Asked Questions
A step sequencer is an interactive interface that allows users to program musical loops by clicking grid squares representing increments of time (steps) and pitches.
The root note (e.g. C in C Major) serves as the tonic home of the melody. Highlighting it helps you visually track key centers when composing lines.
Yes. Changing key, scale, or tone reshapes the pitches mapped to the grid in real time without losing your active step positions.
| Security | 100% (No files are sent to server for processing) |
| File size limits | None (No limit on size of files) |
| Usage limits | None (Process as many files as you want) |
| Price | Free |
| User Information Captured | None (We do not request for user information such as email / phone number) |
| Ads | None (We provide complete ad free experience) |
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