This and related questions about the Real Tracks comes up a lot. RT's are prerecorded by a studio musician. If your specific voicing was recorded you can find it but if not you can't change it without using a program like the full version of Melodyne. The problem with that is it costs about $500.

Bob's Mantra "Audio is not midi, midi is not audio, ommmmmm". The RT's are prerecorded audio, asking to change that is like asking how to change a part on a commercial recording. Midi is no problem, you can do whatever you want with that.

Bob

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