Piano tuner
From Tardis Wiki, the free Doctor Who reference
A piano tuner was a profession where one fixed out-of-tune pianos.
The Ninth Doctor once briefly pretended to be a piano tuner when tracking a sound creature to the Hôtel Le Prestige in Paris. However, he discovered that the piano was not faulty, leading concierge Maurice Le Bon to nearly sack him for his lack of effort. (AUDIO: Fright Motif)