The condition, known as “earworms” has been well-addressed by (of all things) Web MD here. The danger (as I discovered) is that they list the top 10 earworms and now “Who Let the Dogs Out” is reverberating around my own brain pan. Check the link at your own risk. It sounds like @marinelife has it right—replace it with another song OR sing the entire song all the way through to the end (cue your brain that it ended).
@Cruiser – oh gawd, you’re cruel! lol @lucillelucillelucille – that was very interesting (politesse for weird!), hard to fixate on it even if I tried! @Kayak8 – after clicking on @Cruiser‘s link, I’m too scared to check out yours!
I started vacuuming the house for abt 20 mins & the vibrations and whoooshing sounds seemed to have worked – phew!