I don't believe there's any need to undo anything, Stan. Just shut down without saving the quantized melody.

Actually, I myself almost never actually quantize things anyway, because it seems there's always a way to make it display and print correctly while still sounding good. As everybody agrees, the leadsheet will automatically compensate for quite a lot of timing slack. But quantizing will make many corrections quickly, if your times are super-loose. So it could help.

Larry
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