There’s a reason you can’t get that one song out of your head. It's called an “earworm”.
And I did know this one:
Lived near a dairy farm owned by German immigrants and laughed when I saw they piped music into the milking area. But they sure gave more milk than ours.
See all of them @ http://www.buzzfeed.com/kellyoakes/i...ke#.ksn94Ek5J5
And, because of this, I clicked on my Spotify program and brought up my collection of Henry Mancini music. Forgot just great every one of his tunes is.