I think it's a pretty simple topic, idea. You post your favorite genres, and possibly artists and why.
Being very general, Classical and Rock are my favorite genres. However, to get more specific:
Classical-wise: I really like all of the Classical periods for their unique qualities. I've went through several phases of liking one more than the others, but now I'm to a point where I just really enjoy all of them. I might have a slight bias towards Impressionistic, still, though.
Rock-wise: Most of the rock I listen to fits into the general Classic Rock category. I have a tendency to prefer bands that are a bit more on the experimental side, especially instrumentally. I love brass/woodwind instruments in rock music, for one thing. So I love Jazz Rock. However, I like Progressive in general. And since I grew up with it (my parents having grown up in that generation), I have a soft spot (no pun intended) for soft rock (such as Bread, America, Jim Croce). The radio stations I tend to listen to are all "Oldies" stations. I'm not sure what exactly that means, but that's what I usually like.
I like some modern music, as well. However, I don't have a high amount of exposure to it, so I don't know many. I like some Ska Punk, because I love my wind instruments, of course. My favorite modern band is Streetlight Manifesto, although, to me, they're something different from Ska (the influence of Ska is obvious at places, but not always). I also like some of the rock from the early and mid 2000's. Admittedly, it's probably all middle school/early high school nostalgia that makes me like them, but some of them I do love more than I did back then.
Obviously, you don't have to make a post like I did (if anybody actually read that? lol) but please try not to just say "I pretty much listen to everything". Can anybody really even claim that? I try to keep an open-mind to music, but there is just some genres I can not get into no matter how hard I try.