An earworm, sometimes known as a brainworm, is a catchy piece of music that continually repeats through a person's mind after it is no longer playing. As per Wikipedia
At the moment this song is going through my head like a crazy person:
Last week this song I could't get rid of this song from my head:
Then I heard this song on the radio and thought what a great song, didn't click what it was about then I googled the video and was a little shaken by it.
What song gets into your head and you can't get rid of it?