I'm sorry, I have to agree on the hidden slide menus - un-metro and pretty annoying as you always have to pull a menu, it doesn't feel solid. I really like how the old hub/ the concept of the new xbox music app. Danny, yours is pretty close to that, a little more rich, and that's ok. I like your concept, especially the first image with the recent as album covers. I'd remove the capitals with "artists" etc. Furthermore, I like the idea of having an artist page with all the album covers of the artist as well. Nicely put!
Offtopic, is it me or does the dude from Owl City look like Messi?