Thinkspark studio · Boarding pass · TS·02 · 2026

Rubberband

A music app that feels physical — one control bends every free note home.

MediumInteraction
FPS120
Jank0
Spring1
Rubberband Play screen: string lines from A2 to A5, octave selector, A major pentatonic scale and the GRAVITY slider Rubberband Sound screen: rubber-to-string material, pluck, bell, bow and grain engines and character sliders Rubberband scale screen: choosing the tonic and scale, from major pentatonic to Arabic maqam modes

01 What it is

Rubberband is a string instrument that lives on a screen. You pull, stretch and release — the surface answers to the physics of touch, and every gesture is a note you can feel in the hand.

02 Gravity — the star

One control rules them all. GRAVITY bends free, fretless pitch toward the chosen scale: at 0 you glide on glass; at 1 every note snaps perfectly in tune. The whole instrument is tuned by a single thumb.

03 What we built

A Karplus-Strong string engine, the GRAVITY tuning model, octave bands and a live looper — a gesture language tuned note by note until it felt alive.

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