Yup...every time you regenerate such as when a transpose is done, the parts will be similar but sometimes that ends up being different as well, from what you had gotten used to.

Since a rhythm piano isn't a lead, you might try freezing the other tracks if you like them and regen that piano part a few times. Listen to each new version and when you find one that you can work with, freeze it.

Normally, a rhythm part will work with just about any singer and any melody. Try the regen to get something that's close again.


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www.herbhartley.com
Add nothing that adds nothing to the music.
You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.