What turns you off when it comes to music?

I don't like:

Rap

Bands with members who all have nicknames themed with the band (i.e. Avenged Sevenfold's members are M. Shadows, Synyster Gates, Zachy Vengeance, Johnny Christ, and TheRev. I got those straight off the official band site). Can you get any cheesier than that?

Bands who lack any sort of melody whatsoever, like most metal bands who would rather just headbang for an hour on an album. I can't sit there and listen to a whole album of that (Metallica anyone?). If a song comes on the radio, I'll listen to it. If they're playing a show with other bands I like, I'll go. But their albums just sound like the same song on repeat.

Bands who put looks over music, i.e. Slipknot, Gwar, Kiss, and most emo bands. Kiss had some okay tunes, but admit it, had they not had the makeup and stage antics set up, they wouldn't have been nearly as huge.

Hawthorne Heights. Sorry, I can't think of a particular thing I hate about this band because I just hate every single thing about them. "SO CUT MY WRISTS AND BLACK MY EYES!!!!". That set the emo genre back about a decade or so.

Bands that are too experimental for their own good. My friend introduced me to a band called Sunn O))). He told me I would like them, so I downloaded an album. The whole album just sounds like they strum the guitar, put it in extreme slow motion so that one strum lasts about a minute and sounds really evil and satanic, and they have the Cookie Monster yelling in the background. That's not even music!

Jam it back in, in the dark.