Pakistani pop singer Shehzad Roy (right) sings for teenage prisoners at a prison in Karachi, Pakistan, in 2008. Known originally for fluffy pop songs, Roy's music has taken a harder, more political edge, protesting injustice in Pakistan. Shakeel Adil/AP hide caption

itoggle caption Shakeel Adil/AP

Goin' Down Rockin': The Last Recordings is a new album of songs by Waylon Jennings, who died in 2002. Courtesy of the artist hide caption

itoggle caption Courtesy of the artist

This shot of a stack of CDs on photographer Mike Neilson's desk is captioned on his Flickr page like this: "I have this stack of CDs that I don't know what to do with. I haven't played one in a long time now. Do used CD places still exist? Who would buy CDs, much less USED CDs at this point?" Mike Neilson/flickr.com hide caption

itoggle caption Mike Neilson/flickr.com

The Dayton Opera and Dayton Philharmonic Orchestra perform Beethoven's Fidelio in January 2011 at the Benjamin and Maria Schuster Performing Arts Center in Dayton, Ohio. Courtesy of the Dayton Performing Arts Alliance hide caption

itoggle caption Courtesy of the Dayton Performing Arts Alliance

Mumford & Sons is led by singer Marcus Mumford (second from left). The band's second album, Babel, was released on Sept. 25 and is on pace to be the highest-selling debut of 2012. Courtesy of the artist hide caption

itoggle caption Courtesy of the artist