Article Photos: The top 10 songs and albums on the iTunes Store 6/40

  FILE - In this Dec. 9, 2011 file photo, DJ David Guetta performs at Z100's Jingle Ball concert at Madison Square Garden in New York. Guetta's "Turn Me On," featuring Nicki Minaj is the top song downloaded on iTunes' Official Music Charts for the week ending Jan. 23, 2012. (AP Photo/Evan Agostini, file)