The only (airly) sure way to get a particular tuen out of your head is to replace it with an other tune. It's quite easy to do, and often the new tune disappears spontaneously. But not always ...

Some months ago, I realised that for a few years now there has been a tune in my head almost permanently. Not always the same tune, in fact I still sometimes get one "stuck"; but it's like having the radio on in the background: I can carry on working and ignore it (and sometimes it does switch off), or I can stop and listen to the programme. Sometimes it's s problem, because I find myself listening to the music when I'm having a conversation or in a meeting, and I suddenly realise I have to respond and I never heard the question ... It can keep you awake at nights, too.

Steve