Hi ChelePA,
I've read in other posts that Cathletes, who aren't fond of Cathe's music selection, put their own music selection louder and workout to that.
Also some Cathe DVDs have the option to turn the music off.
Finally, and I hope I don't sound too harsh, but when you focus so much on the music, you are not focusing on the muscle group that you're working on as hard as you should be. If there is a song selection that doesn't appeal to me, I'm more focused on working harder on that body part than anything else. The music becomes a distant murmur, secondary, to everything else at that moment.
Yes, motivation is important, 100%, but you are limiting yourself when you opt to take certain classes based on music. Let yourself go, have fun, focus on form and enjoy putting your health in the forefront! Stay focused and committed!