Droneform

A generative drone synth for overtones, intermodulation, and scales from outside the twelve-note piano.

Spectrum. Brass lines mark the drone's harmonics.
Pitch ring: scale degrees, overtones, and wanderers

Droneform makes its sound live in your browser. Start it, then switch on a layer in the mixer (Drone, Wanderers, or Percussion), play the keys, or drag the pad.

Perform

Pad

Keys and ribbon

Keys follow the selected scale. On a computer keyboard, A to ' play from the root, Q to ] one period higher, Z to / one lower. Shift-click a key to move the drone there.

Rhythm

Sound

Everything is computed in your browser. Drag a knob up or down (hold Shift for fine control), use the arrow keys when it has focus, or double-click to reset. Red dots show where Evolve is pushing a knob. Maqam, gamelan, and similar scales and rhythms are common approximations; real practice varies by region, instrument, and player.