I was over in Dieppe for the weekend, when my electric toothbrush - obviously overwhelmed by the combined effects of Amandes farcies au beurre d'escargots, Marmite Dieppoise, Tarte de pomme, wine, coffee and Calvados - gave up the ghost in despair.

I bought a new one on Monday morning and I've been pleasantly surprised by the humming tone it emits which, when varied by changing the mouth shape, produces some nice overtones. Very like a jew's harp, and I recall a similar sound on a BBC Sound Archive compilation by John Peel, where one of the tracks was a recording of a Borneo native holding a large buzzing insect close to his mouth.

I've also occasionally played "Dixie" and the "Marseillaise" using two pencils - one placed on the lower lip and the other used to tap it. The notes sound quite clearly when the mouth shape is changed. As you can see, late idiocy is setting in in our house. (There was also another idiot, on TV many years ago, who made 'music' by bashing a tin tray on his head...)

Any other uses of the mouth cavity to make similar note changes - excluding raspberries, of course?