Thank you so much, erm.. Engineer! Thanks for you thoughts on the missing pieces about MIDI notes. I don't want to spend too much time on this topic, but long story short is that I would likely use MIDI less for choosing particular notes, but instead to animate changes to an oscillator frequency, and amplitude envelopes. Do you happen to have any insight on the process used by Apple themselves for the presentational haptic audio examples? (For example, on this page: https://developer.apple.com/design/human-interface-guidelines/playing-haptics) Side note: currently, I am physically recording haptic sounds with a contact microphone just to get something.