Ae Mooh, that sort of thing has happend to me. Thinking of which leads me onto a guitar player who although I have not heard play guitar did something similar with my tenor banjo! and is probably worthy of this list.

His name is Richard Durrant, he is classically trained and has done work with Sky either as a stand in or a replacement for John Williams and also runs to folk music and as far as I can make out judging by experience above can probably play just about any fretted stringed instrument to an amazingly high standard.

Jon