Tiny Desk Concerts from NPR's All Songs Considered features your favorite musicians performing at Bob Boilen's desk in the NPR Music office. Watch videos from Passion Pit, The xx, Wilco, Adele, Phoenix, Tinariwen, tUnE-yArDs and many more.
The a cappella quartet, known for luminous interpretations of medieval pieces, teams up with folk musician Bruce Molsky in music from more modern times — popular songs from the Civil War era.