Hello!
That is a good question. You are correct that in Club Patchwork we used:
Note Sequencer → Note Triggers to send events on certain notes. That allows the Step Rate to change the frequency of those events.
Those events will currently work best with Customizable Lights, Prop Movers, Prop Manipulators and a variety of other devices. Currently it is true that there will be lag when sending events to the Audio Player. But stay tuned as this should get much better in the future. Thanks for experimenting!