FWIW I'm not sure if he wants to be able to adjust the rest of any generated tracks to match his playing, or if he wants to smooth out his playing after the fact.
Some clarity on that would help.
One option is is fix his timing (like the quantize mentioned), the other involves creating a tempo map to match his playing; two different goals.


I do not work here, but the benefits are still awesome
Make your sound your own!