THERE IS A TIME (2017) for realtime Csound6 (PC & Android versions)

to be found at the top of the list at arthunkins.com. A demo performance is also there.

The PC version requires a MIDI device with 8-9 knobs/sliders & optional 8 keys/buttons/pads.

The Android version needs one of the three alternative Csound*6* Android apps on my website:

(All these include the required 8-9 sliders and optional 8 buttons; no other Csound Android apps include this many controls.)

Featured are several uses of vco2, a butterbp filter, and especially, ntrpol (a very nice recent find - thanks to this list (IIRC, Iain).