I was listening to U2's Achtung Baby 30th anniversary edition recently. There are 50 tracks on that monster including b-sides and remixes. This track came on and I thought, this is a bit good.

I knew I'd never heard it before, and yet something about it was so very familiar. It was a bit maddening as I couldn't figure it out. The AHA moment came after reading this excerpt from The Edge:

There was a song called 'Lady With the Spinning Head' which we were really struggling with. It eventually ended up as a B-Side. But we tried and failed to develop it so many times. It actually spawned three different songs, "The Fly," "Ultraviolet (Light My Way)" and "Zoo Station". If you ever listen to "Lady With the Spinning Head" you will hear elements of all of those songs.

Yes, yes you do.