Tiny Desk Concert with Anonymous 4 on March 4.
The a cappella quartet, with banjo and fiddle, offers popular songs from the Civil War era.
Before the wide-ranging band plays, the audience sings "Happy Birthday" to mandolinist Chris Thile.
The duo plays visionary Beethoven, heartbreaking Janáček and Glass that unfolds like a lullaby.
The singer beat out nearly 7,000 other submissions to win NPR Music's Tiny Desk Concert Contest.
Aurelio weaves intricate layers of acoustic guitar to capture the feel of African and the Caribbean.
The Wisconsin band performs three of its warm, accessible songs in the NPR Music offices.
The Tiny Desk becomes a DJ booth for an office space dance party.
With her huge voice and an assist on trombone, Nika Roza Danilova offers up a curious combination.
The band strips down its electronic sound with the aid of a spaghetti strainer and a paint bucket.
With 23 members, the performance-art marching band is the biggest ever to play the Tiny Desk.