hi, Christian, lots of thanks for your very helpful suggestion. i tried it and it works really great! but in my situation, i'm going to have a rubato passage in the middle of a piece. i can use the method to make a very natural feeling performance, but the problem is that the speed and how the beat was measured after the rubato passage seem to be changed as well. the tempo after the successful rubato passage becomes a mess. i have been trying many ways to fix it, but didn't succeed. is there a way to make sth like a stopper at the end of the aimed passage before i apply hte beat map method, so i can limit it with the space i want?
i really appreciate your vey thoughtful hint, which will dramatically improve my production! thanks a lot,