Punch Brothers, who return to the road next month starting at the Bonnaroo and Telluride Bluegrass festivals, have kicked off the sixth season of the A.V. Club's A.V. Undercover series. "First up, it’s the thoroughly awesome Punch Brothers, who covered The Cars for us way back in 2012," says the A.V. Club. "[Y]ou can never hear a banjo- and mandolin-assisted cover of The Strokes' 'Reptilia' too many times." Watch them perform it as many times as you'd like in the video here.

Emmylou Harris and Rodney Crowell, whose new duets album, The Traveling Kind, is due out May 12, stopped by the Late Show with David Letterman as musical guests on the show last night. They sang a special rendition of the gospel tune "Will the Circle Be Unbroken" in tribute to Letterman, whose final episode as host will air later this month, joined by Steve Martin on banjo, Amos Lee on guitar and vocals, and Mark O'Connor on fiddle. You can watch their performance here.

Joshua Redman traveled to Myanmar with the International Rescue Committee in February to visit IRC-run maternal health and community engagement programs. He spoke with villagers who were building roads and water systems based on community consensus gained through an election organized by the IRC—giving some villagers the chance to vote for the very first time. Redman became an IRC Voice in 2013 and says of his trip, "I have played music all over the world, but I have never before experienced something like this." Watch a video from the visit here.

Punch Brothers, as part of the North American tour celebrating the release of their new album, The Phosphorescent Blues, performed for a sold-out crowd at Boston's House of Blues in March. The WGBH program Front Row Boston was there to capture the event. You can now watch the band perform several tracks from the new album and earlier favorites, interspersed with backstage interviews with the band, in the 90-minute video here. Up next on the tour: Bonnaroo and Telluride Bluegrass festivals in June.

Rhiannon Giddens was the musical guest on CBS This Morning: Saturday, performing two songs from her recently released debut solo album, Tomorrow Is My Turn—"Black Is the Color" and "She's Got You"—as well as "Spanish Mary," from the New Basement Tapes album Lost on the River. You can watch all three performances here. "With a voice so powerful it could scorch the rafters, Rhiannon Giddens has the pipes of a genuine diva. But her attitude is humble and her personality is down to earth," writes the Chicago Tribune of a recent tour stop. "With equal helpings of confidence and respect, she nimbly saluted her idols while giving their iconic work a fresh spin."

Sam Amidon has released a new video for the song "Blue Mountains," off his latest album, Lily-O. The song is an Appalachian ballad that tells an enigmatic tale of a young woman who falls in love with a married man. The video, which was created by filmmaker and fine-art/fashion photographer Andrea Sisson, premiered earlier today via Paste, which calls Lily-O "excellent." The video was shot in Ojai, CA, and features Amidon and model/actress Alex Noiret. Watch it here. Amidon is currently touring with Sharon Van Etten in Europe and the UK then headlines his own European shows.

Rhiannon Giddens was the subject of a feature on PBS NewsHour, looking at her solo debut album, Tomorrow Is My Turn. "Her debut celebrates women who influenced her, some famous like Dolly Parton and Patsy Cline, others, like Sister Rosetta Tharpe and Libba Cotten, much less so," says NewsHour's Jeffrey Brown. "The album also showcases Giddens’ range through gospel, blues, country, and jazz." Watch the NewsHour piece here. Forbes, reviewing her recent NYC tour stop, exclaims: "Besides a thrilling voice, she comes at you with a barrage of sounds and sights and movements from an arsenal of talents that will positively floor you ... She’s a musician’s musician, and, moreover, a people’s musician, one of the best ever."

The Staves celebrated the release of their new album, If I Was, with a performance at Wilton's Music Hall in London last month. You can now watch four performances from the concert: three songs from the album—"Make It Holy," with album producer Justin Vernon, "Teeth White," and "Black & White"—as well as their take, with Vernon, on the Bruce Springsteen classic "I'm on Fire." Watch them here.

The Staves celebrated the release of their new album, If I Was, with a performance at Wilton's Music Hall in London last month. The concert included, among other songs from the album, the tune "Teeth White." You can watch the performance of that song here. The trio is currently touring Europe and has just announced a tour of the United Kingdom for this autumn. The Staves also perform at the Eaux Claries Music Festival in Eau Claire, Wisconsin, where they recorded the album with producer Justin Vernon.

Rhiannon Giddens recently stopped by the Last.fm studios to discuss her new solo debut album, Tomorrow Is My Turn, and perform three tracks off the album. You can watch the interview and hear her discuss and perform the songs—"Don't Let It Trouble Your Mind," written by Dolly Parton; Hank Cochran's "She's Got You," famously recorded by Patsy Cline; and "Shake Sugaree," by Libba Cotton—here.

Buena Vista Social Club's Lost and Found, a collection of previously unreleased tracks out next week, opens with a live version of "Bruca Manigua," featuring Ibrahim Ferrer on vocals. A video of Ferrer performing the song live in concert in 2000 premiered yesterday on the Wall Street Journal's Speakeasy. "This video, shot in front of a sold-out crowd in Paris, finds the spry Ferrer, then 72, in fine form," says Speakeasy, "his voice strong and supple as he sings the 1930s Cuban standard accompanied by lush, joyous horn parts and polyrhythmic percussion." Watch the performance here.

Punch Brothers performed two songs from their new album, The Phosphorescent Blues, on CBS This Morning: Saturday: "Boll Weevil" and "Magnet." You can watch both songs here. "Formed in 2006, each of the five musicians were well-known for their musical skills," says the show, "but together, they have become a force beloved by critics and audiences worldwide."