I fear my brain must be stuck in some misunderstanding. This simple test script generates the error...
synths may only be in one instrument or channel at a time
...on the final line,
But that line isn't assigning a synth to anything... it's assigning an instrument to a track. And I don't see how anything is being assigned to more than one of anything. What does that error mean?
local synthObj = playdate.sound.synth.new() local instrument = playdate.sound.instrument.new(synthObj) local noteTrack = playdate.sound.track.new() noteTrack:setInstrument(instrument)