Vin Garbutt in his concert the other night said, when his Doctor asked him if he had tinnitus, he answered no, he could just hear everyone elses.
Is that the sort of tune your thinking of? If it is I think it is in very high C with tiddley tum tums treking through it at rapid frequency and the words are in a very old form of Spanish used by Magellen who apparently discovered the world was round.
In fact I'm sure it is a song about the Spice Islands. It certainly smells like cinamon from here.

matai