Live In Concert from NPR's All Songs Considered Folgen

It's hard to overstate the impact that Dr. Ralph Stanley has had on bluegrass and old-time gospel music. Now 82, he sits atop a 60-year legacy of making music, both as the preeminent purveyor of clawhammer-style banjo picking and as a singer with one of the most widely imitated (but never duplicated) voices in country music. For this short Tiny Desk Concert, Stanley performs three classic songs, all a cappella: "Gloryland," "Turn Back, Turn Back" and "Amazing Grace."

Moby's latest album, Wait for Me, is his best new release in a decade, full of beauty, sadness and celebration. The singer and electronic artist is currently on tour in support of the record, giving sold-out performances to packed arenas and smaller clubs throughout Europe and the U.S. For this stellar concert, recorded live in Berlin on June 26, Moby treated fans to nearly two hours of new songs and old favorites from a career spanning nearly 20 years.

Project Song participants only have two days to write and record a song, but Death Cab for Cutie's Chris Walla and Jawbox's J. Robbins had it even tougher: They had never met before entering NPR's performance studio. Watch as the two create "Mercury," a soaring song inspired by a cataclysmic scenario.