Sigur Rós' new mixtape "will live on digital services as an 'endless' playlist," cites the Liminal project's site. Mark Metcalfe/Getty Images hide caption

Valentine's Day in New York: a "love lock" on the Brooklyn Bridge. Spencer Platt/Getty Images hide caption

Clockwise from upper left: Sufjan Stevens, Oumou Sangare, Sigur Ros, Alejandra Deheza of School For Seven Bells Courtesy of the artists hide caption

Sigur Ros performs at Celebrate Brooklyn's Prospect Park Bandshell on July 31, 2012. Ryan Muir for NPR hide caption

Vampire Weekend's Modern Vampires of the City was the most popular record in our listener poll for the best music of 2013. Courtesy of the artist hide caption

Senate Minority Leader Mitch McConnell (left), Senate Majority Leader Harry Reid (center), and Speaker of the House John Boehner are three key lawmakers in the government shut down and debt ceiling crisis. Drew Angerer/Getty Images hide caption

Clockwise from upper left: Jon Hopkins, Ebony Bones, Sigur Ros, Zola Jesus Courtesy of the artists hide caption

Lygia Clark's cover art for Sigur Rós' forthcoming album, Kveikur. Lygia Clark/Courtesy of the artist hide caption

Clockwise from upper left: Danger Mouse and Norah Jones, Patrick Watson, THEESatisfaction, Jonsi of the band Sigur Ros. Courtesy of the artists hide caption

Sigur Ros performing 'Festival' Courtesy of the artist hide caption