Mick Jagger, Iggy Pop, Johnny Rotten, David Byrne, David Johansson (later known as Buster Poindexter, but that's a whole 'nother story), Richard Hell, Kurt Cobain, Jello Biafra, Phil Anselmo, Joey Ramone, Ian MacKaye, Henry Rollins...
They can't "sing". But they're far, far beyond 99% of human beings who can.
Some of the best rock 'n' roll that is and ever was has been made by guys (and girls) who:
- Had cheap, shoddy equipment from a pawn shop.
- Had pretty much no real training to speak of.
- Recorded entire studio albums onto cheap 4-track machines.
- Went ahead and started a band anyways, despite the naysayers or the prevailing conventions and standards of the day that dictated the proper way to make rock and pop. Historically speaking (as in, early to mid 1970s), if you could pin the "punk rock" phenomenon down to a single ethic that all the pioneering figures had in common, on either side of the Pond, that would be it.
Then again, I guess it helps if you want to be the next John Mayer or even... the next Robert Plant. Nothing wrong with that, for sure.
But remember, it's only rock'n'roll. :cool: