I had never used Reapers InputFX feature. To process MIDI or audio at at the input before it is recorded.
For vocals and things like that, I just use track FX and add compression there, so it can be changed latter as needed.
But in using the MIDI JS modules to process MIDI, putting them as InputFX allows you to record their output. Useful too in this case.
So the above YouTube short is a small section of a track where I experimented with JS modules that produce 1 note chords, arpeggiation and force notes to a scale. Interesting.
The animation is revisiting Terry Gilliam styled paper cut outs, all done in Moho Pro12.
A longer version of this track:
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