Another trick (if your playing is far enough out that quantizing doesn't fix it):

Run your recorded song through the ACW. (Audio Chord Wizard)
Make sure you allow it to change the Tempo map in the options that appear.

It will temporarily render your song to audio so you can hear it in the ACW. You'll need a default DXi/VSTi synth for this (even if it is the windows default); again, this is a temporary 'render to audio' just so you can hear it in the ACW ..
Adjust the Tempo map to match your playing measure by measure (just listen along and tap the F8 key on the first beat of each measure as you listen, that simple).
Then send that back to BiaB/RB.

Now you have a tempo map that matches your playing .. but the MIDI should be adjusted to the new Tempo map also.
The Tempo map may show one measue at 120 BPM, and the next at 118, etc. .. but now your playing will be on the '1' of each measure.

Now erase everything in the tempo map and set the starting tempo to whatever it should be. Sounds weird, but the MIDI is adjusted to the tempo map, no matter what you set it to do.

Your MIDI playing should now adjust over time to make it match the desired fixed tempo ..
(you can still use quantize afterwards if needed, but probably very minimal if at all at this point)

It's a little advanced, but many other DAWs can't do this any easier, if at all.

Last edited by rharv; 05/08/20 10:48 AM.
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