Is This The Strangest Synthesizer User Interface Ever?

TOPLAPapp Delivers Crossword-style Controls      29/04/10

Buying Choices

TOPLAPapp is a free application for the Apple iPad that uses a sonic puzzle as the interface for a virtual machine for sound synthesis.

If also has one of the strangers user interfaces ever created for a synthesizer.


This machine accepts a few valid instructions represented by the letters T, O, P, L, A, and p. You control TOPLAPapp by placing each command letter within a grid, along with setting some associated parameter sliders.

The machine rushes through the instruction set to create output sounds, which are usually of a somewhat noisy character, hopefully interestingly so.

The historical antecedents include instruction synthesis as pioneered at the Institute of Sonology in the 1970s, and the live coding movement, of modifying a running program as it acts.

Note: Developers warn "This app is intended for those interested in more experimental sound art: don't download unless you are open to stranger computer music sounds".

Pricing and Availability

TOPLAPP app is a free app and is available now for the iPad, iPhone and iPod touch.


James Lewin
Twitter @podcasting_news


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