I came to a bit of an epifiany regarding the use of midi in EZKeys. When I did my video above I mentioned, "...I don't know how this does what it does". So I have been looking at it closer.

It turns out ANY midi file can be used in the EZKeys midi library. I inserted a BIAB folder containing a slew of midi content from all my scratch files over the past year into the EZKeys midi browser menu. Every .mid file in the folder then appeared as a selection to be used as part of the Browser Midi provided in EZKeys. If I pulled that selection to the EZKeys timeline, it would act as a midi player and show the chord names and play them as is. But if I used that selection as "Browser Midi" to rewrite the song blocks it would morph the midi to play the new chords in the groove and manner of the whatever is in the library selection.

Easy to reproduce this all yourselfs to see what it is doing. So I think musocity is pointing out that any and all of the BIAB midi content is fair game to be inserted into EZKeys as "3rd party" midi.

BIAB – 2025, Reaper (current), i7-12700F Processor, 32GB DDR4-3200MHz RAM, 1TB WD Black NVMe SSD, 2TB WDC Blue SSD, 1TB WD Blue, 2 TB SK NVMe, 6 TB External, Motu Audio Express 6x6