Ha, ha. The letter "L", where it all started for me. Don't laugh, but here goes.
I was always more into sport and films than music, so it kind of hit me out of the blue when I was sitting in the cinema watching Back To The Future and "The Power of Love" came on. I absolutely loved it and soon bought the soundtrack. I'd not bought a pop or rock record before or even bothered listening to any, despite the fact that my best mate was into lots of rock and heavy metal, and soon I was buying all the Huey Lewis and the News albums (well, the three they had released up to that point).
And my first concert was on 24th October 1986, Huey Lewis & The News at the Apollo.
I don't listen to them much any more, but those first three albums are still excellent.