John, I was just giving FastBikerBoy a hard time about acting like he didn't care about older music.
I grew up on the classics and they were very influential on me. I actually started out classically trained, playing concertos, sonatas, and all that stuff. I studied piano with a private instructor for many years and did a few years on organ (as in pipe organ) at TCU. My first experience in a recording studio was with an ensemble (string section, horns, woodwinds) that I brought in to back my rock band which was doing strange music I wrote: an odd mix of drums, heavy guitars, synthesizer, piano, and small orchestra. It was a little ambitious but interesting.
I leave it to a historian or anthropologist to figure out which musicians most influenced music, culture, politics, etc. I think we can agree that Beethoven was an enormous force and that The Beatles were the catalyst for a huge change as well. Of all the famous composers from the classical and romantic periods, Beethoven is far from my favorite, but that is just a personal thing. He definitely was a genius.