"I can't sing, but I used to sing with Whitney, just for fun, " he said.

BBC: Whitney Houston

Unidentified Singer: They don't have to take this part, but can I sing it one more time?

NPR: From Jazz to Gospel 'With One Voice'

God, I would love it if I could sing or play something -- but I can't.

WHITEHOUSE: First Lady Speaks to Students at Blues Workshop

'I Puritani' I like a little bit less, probably because I can't sleep at night before I have to sing it.

WSJ: Joseph Calleja | Faust | Here to Deal With the Devil | Cultural Conversation by Barrymore Laurence Scherer

Except you don't sing messed up, you sing something else which I can't say on National Public Radio.

NPR: Thom Yorke's 'Eraser' Prompts a Letter

"Most of them don't think they can sing, but they can, I assure you, " he said.

BBC: Abba quartet at Mamma Mia showing

"I'm not interested in how well someone can sing, " says Bernard Sumner of New Order.

BBC: The X Factor takes on the world

"I sing in the shower as they say, and I can carry a tune - but even my ability to carry a tune deserted me under pressure, " he says.

BBC: The wizard of weirdness

"She is so full of life and spirit and she loves playing jokes on people and she likes to keep you on your toes, but musically I have never met anyone who can walk out on stage and consistently sing as in tune and proper and right as Dolly Parton does, " her sometime duet partner Kenny Rogers told CNN.

CNN: Dolly Parton: 'I know I'm a bit over-exaggerated'