The kind of harmonica played on the Midnight Cowboy theme. Dr K didn't know this until after he'd volunteered to play the harmonica solo in a performance with the BBC Philharmonic Orchestra. After being told by conductor Robert Ziegler "you really can't play that thing, can you?", the bequiffed one spent the week practising, which meant annoying Simon even more than usual. He didn't do a bad job in the end, considering.