I have several no-nos where music is concerned, and they're all very complex. 1) Rap music. Forget it. If a guy ONLY listens to rap music, no thanks. If it's part of a wide variety of musical tastes, fine. 2) Country. Well, new country. If a guy listens to Garth Brooks, George Jones and Johnny Cash, that's okay. 3) Speed metal. Simply because it gives me a headache. 4) Screaming lesbian punk music. NO NO NO NO NO. NO. 5) Punk music. I like my tunes to have a little more complexity, thank you. More than three chords, please. If, however, the punk is part of a larger variety, fine.
Heh. Both of my best guy friends listen to music I dislike, but we're still friends. One loves the rap and the hard rock, which I don't really care for...but he has a deep love for Pink Floyd, which redeems him. The other loves rock music, same as me, but his two favorite bands (bands I used to like before I met him) are the Red Hot Chili Peppers and Radiohead. Why do I dislike them now? BECAUSE HE PLAYED THEM SO MUCH. But there are other bands and acts we like to listen to together--Floater, Muse, Eric Clapton, Stevie Ray Vaughn. He also has issues with my taste in music--I love Franz Ferdinand. He disagrees.
Basically, if a guy's taste in music is wide in variety, I'm willing to forgive the few faults they may have