"Hey Jude in Minor Scale. Smells Like Teen Spirit in Major Scale. The Final Countdown in Major. Beat It in Major. Losing My Religion in Major."
That's all digital manipulation of the original recording. Presumably, cover versions changing from major to minor or the other way around are very common.
ADDED: My son John IMs me that my presumption is wrong and offers this excellent demonstration of why it's a bad idea:
(If you don't know what that's supposed to sound like, here's the original.)