At one time I owned a vocal harmonizer that had pitch correction--it was a feature I didn't need, but out of curiousity I tried it out. It followed the chords perfectly. This was a decade or more ago, and the device would only correct up to certain amount, but it did an excellent job within its range.

I don't think this is a hoax, it's just improved technology.

Thanks for the link--it's another WOW factor for arranger keyboard technology.

P.S.: I already sound like Roger Whitiker, at least that's what the ladies tell me.

Gary