Tanya there is a thread already addressing what music we want and like (I think its "What do you want from a spin class?"). I realize different music for different age groups, abilities etc but I like the following:

a) music that varies. NOt the same techno beat throughout

b) music you can sing with. Always makes me get motivated.

c) NOT TOO LOUD!!!! Please!

Personally I like alternative rock, but anything is great as long as it has a fun beat and isn't too weird.