Good album covers???!!!?

Basically, for my ceramics class, we need to bring in photos of album covers (like music cd covers) so that we can make clay plaque replicas of them. However, my teacher said that he does not recommend covers with people on them because it is too hard to draw. An example is Glee's album covers, they only say Glee and the season name. So ya if any of you know of album artwork of popular artists with no people that is appropriate for a 13 year old plz let me know!!! I prefer no like "Death Metal" groups or like rockbands....i prefer more Lady Gaga, Britney Spears, etc. THNX!!!!