Today, AFAIK, most MIDI notes end with velocity and not a note off event as this save time and code as explained here:

http://www.nyu.edu/classes/bello/FMT_files/9_MIDI_code.pdf

Velocity today really has two functions, to determine how hard the note is played and how long that note lasts.


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64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware