It’s ok
This program does change the pitch or speed effectively but it makes it sound very warbley or computer sounding so be warned. It does not have the same clarity of sound as the original pitch and the instrumentation is most affected but the voices are still usable for listening to for trying to figure out a different key vocally. I have a great IOS app called “Pitch Changer” but I haven’t found the Mac counterpart for it yet.
Rockergrl4Jesus about Music Speed Changer