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

  FILE - In this Jan. 26, 2012 file photo, musician Justin Bieber is seen during a hand and footprint ceremony honoring musician Michael Jackson in front of Grauman's Chinese Theatre in Los Angeles. Bieber currently holds the top spot for iTunes sales of his single "Boyfriend," for the week of April 2, 2012. (AP Photo/Matt Sayles, file)