If you're a power user, and prefer 10.7, there's a very high chance the iOS 7 music app will be devastating to you.
They've stylistically gone the same route... Removed some functionality in exchange for the theme (largely white everything). You can only see about half the artists at a time (3.5 on my 4S), 2.5 playlists. The artists have a bunch of Apple-chosen photos that you are unlikely to recognize, and will mostly look the same. You can no longer "view all songs" by an artist, instead they are shown by album in chronological order (takes a lot of space), and since it's all white, you can't easily tell where to touch.
I just wanted to put that out there, because they applied a similar mentality from 10.7 to 11, but even more limiting.