I have an experimental build that makes noises at least with the Nano Every. I've added some comments to the issue here:
https://github.com/sensorium/Mozzi/issues/83I haven't submitted a pull-request (yet) as it is somewhat incomplete and I'm not sure which approach might appeal to users most (either output on D9, trashing millis(), or D3 with possibly lower resolution). I could also do with someone much more familiar with the 8/9-bit ness of the AVR style PWM generation to take a look and either confirm this is optimum for this platform or maybe suggest some better settings.
Please do give it a try if you have an Every and let me know how you get on!
Kevin