Fearless key changes
DJs can mix across keys mid-set and the musician follows, already transposed.
MAESTRO
Alex Gaber · Alan O Cinneide
Official ADE Lab Hackathon 2026
The problem
Originality · Built for DJ + musician
How it works
Streams track, key, tempo and position over OSC
DJ taps Stop / Ready / Play to send cues, also over OSC
Key in their instrument, beat, waveform, cue
What it makes possible
DJs can mix across keys mid-set and the musician follows, already transposed.
Solos in the breakdown, hits on the drop, all called from the booth.
Musicians can join an unfamiliar set and still play with confidence.
Who it's for
Free musician app
Paid djay Pro plugin
Built on djay Pro
No new hardware
Live demo
The key appears transposed for alto sax
The DJ warns on the build
On the drop, the musician comes in, in key
MAESTRO
Thank you · Alex Gaber · Alan O Cinneide
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