I'd forgotten about milli vanilli. Given the nature of a lot of current pop music, I suspect their only big failure was getting caught.

It's a serious point, though. If you use too much of the "assistance" then who knows whether its you doing the singing or the machine.

I try hard to ensure that when we are playing alongside midi files that it is quite clear that this is the case but equally clear that we are doing all the singing and quite a lot af playing as well.