Mental Jukebox - incidental music or revenge of the Id?

This has almost nothing to do with Mollie dog, except inasmuch as she might occasionallyset it off, so to speak - but I felt the need to share.
I basically have music playing in my head most of the time. Usually it's something I've heard on the radio, or it's triggered by something I see, something that someone says, or it's just random. When I opened my A-level results, it played 'China in your hands' (T'Pau) - a particularly appropriate choice, I thought.
This morning, it was apparently randomly playing 'Valerie' by Stevie Winwood.

But by far the most bizarre subconscious choice, and one which recurs on a disturbingly regular basis, is this:

The 1973 Swedish Eurovision Entry

I saw a video of it once at a friend's house in Sweden, I think it was in 1985 or something and there was a retrospective of Swedish Eurovision entries on TV. I'm assuming that the only reason that this particular song stuck in my head is because of these rather charming lyrics:

I am blue and I long for your caress
your breasts are like swallows in nesting

I suppose I should be grateful this is pretty much the only 'schlager' it plays, with the exceptions of Abba's 'Waterloo', Katrina and the Waves 'Walking on Sunshine' and very, very occasionally, Carola Häggkvist's 'Främling' (1983).