Macklemore (left) and Ryan Lewis, whose "Thrift Shop" was the biggest song of 2013, according to Billboard's year-end chart. John Keatley/Courtesy of the artist hide caption

itoggle caption John Keatley/Courtesy of the artist

The 1969 album Then Play On, Peter Green's last with Fleetwood Mac, signaled a spiritual quest already in progress. Jan Persson/Redferns hide caption

itoggle caption Jan Persson/Redferns

David Jude Jolicoeur aka Trugoy (from left), Vincent Mason aka P.A. Mase and Kelvin Mercer aka Posdnuos pose for a portrait outside the Apollo Theater in Harlem in September 1993. David Corio/Michael Ochs Archives/Getty Images hide caption

itoggle caption David Corio/Michael Ochs Archives/Getty Images

Ryan Bingham performs at Autism Speaks' third Annual Blue Jean Ball on Oct. 24 in Los Angeles. Angela Weiss/Getty Images hide caption

itoggle caption Angela Weiss/Getty Images

Because of a bitter labor dispute, the Minnesota Orchestra has not played a single performance in its concert hall this year. The orchestra's music director, Osmo Vanska (pictured here), resigned in October. Greg Helgeson/Minnesota Orchestra hide caption

itoggle caption Greg Helgeson/Minnesota Orchestra

The Pleyel piano factory, which once supplied instruments to Frederic Chopin, will close its doors at the end of the year. Francois Guillot /AFP/Getty Images hide caption

itoggle caption Francois Guillot /AFP/Getty Images

Florida Georgia Line was unsigned when it recorded the year's biggest country song, "Cruise." Courtesy of the artist hide caption

itoggle caption Courtesy of the artist

Kacey Musgraves' Same Trailer, Different Park is one of several country music albums released by women this year. Kristin Barlowe/Courtesy of the artist hide caption

itoggle caption Kristin Barlowe/Courtesy of the artist

Our alternate headline: Why Nobody Will Ever Top Mariah Carey's "All I Want For Christmas Is You." YouTube hide caption

itoggle caption YouTube

Rubab master Homayoun Sakhi and legendary Afghan singer Mahwash perform together as members of the group Voices of Afghanistan. Courtesy of the artists hide caption

itoggle caption Courtesy of the artists

Carlos Santana, left, and Marcus Malone when they reunited in Oakland. Malone was part of Santana's band in the late '60s, then spent the past four decades or so living on the streets or in prison. YouTube hide caption

itoggle caption YouTube