Rather than choosing chord sections from the source files to join together in RAM then play,
it will choose a section for the currently inputted chord, go straight to it and play.
This is what it is doing in the video, they are 24bit 48khz files on a USB drive.
Biab could do that and be a live Arranger, I think Yamaha have audio drums but I don't know if they have audio instruments yet.
Biab could be then used with a laptop and the user's keyboard.

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Play-Direct-Arranger.mp4 (3.77 MB, 86 downloads)