TIM - serious again.

Through software you can create a "histogram" (sic) of the original voicing...registering key, nuances, and change it...speed, key, etc

You can also take an original later recorded sound and match it to the singer.

I once used "Cakewalk" but have fallen outside the current trends beyound "Garage Band."

You CAN do it.

Sincerely,
Gargoyle