Chris Thile and Michael Daves, whose debut duo album, Sleep with One Eye Open, is due out on Tuesday, have premiered the fourth and final video in a series of performance videos captured live at New York's Rockwood Music Hall: the traditional tune "Rabbit in the Log." Watch it here. "This ain’t your grandparents’ bluegrass hootenanny," says Time Out New York in a preview of the duo's tour kick-off at Rockwood next week.

k.d. lang and the Siss Boom Bang performed two songs from their new album, Sing it Loud, on Jimmy Kimmel Live! earlier this week: "I Confess" and "Sugar Buzz." Watch them here. Also this week, lang appeared on The Monocle Weekly. The BBC says the album is "instantly striking," with songs that are "rich, masterful and seductive." The LA Times, reviewing last weekend's Stagecoach festival, describes lang as "wondrous," and her "performance provided an eminently satisfying conclusion."

Emmylou Harris performed two shows in Norway over the weekend, at which she proved why she is the "Queen of Country Rock," says the Bergens Tidende. Harris appeared on Steve Earle's Hardcore Troubadour Radio show; you can watch their very special duet on rollingstone.com. Watch a web-exclusive performance of John Lennon's "Imagine" from the Late Show with David Letterman here.

The Low Anthem performs live on KUT in Austin, Texas, today at 2 PM CT, prior to tonight's concert in Austin. The band "frequently dazzles on both recordings and in live performance," says KUT. Their recent performances at Philadelphia's Kimmel Center for WXPN and on Mountain Stage are both available at npr.org. The Low Anthem's Hear Ya Live Session is also up now and includes the song "Boeing 737," which Hear Ya calls "triumphant, almost prophetic." Watch it here.

Chris Thile and Michael Daves, whose debut duo album, Sleep with One Eye Open, is due out on Nonesuch on May 10, have premiered the third in a series of performance videos captured live at New York's Rockwood Music Hall: "You're Running Wild," made famous by the Louvin Brothers. Watch it here. The duo will be releasing a 7" single through Third Man Records on May 24. A limited-edition tri-color version will be available at Newbury Comics at Faneuil Hall in Boston that day; Thile and Daves will give a free in-store performance.

Emmylou Harris performed "Six White Cadillacs," off her new album, Hard Bargain, on the Late Show with David Letterman last night. Letterman called her "an icon, one of the greats, if not the best in country music and, just generally, popular music as far as a composer and a singer and an artist." She performed the album's title track on the Today show this morning. Yahoo! Music's Ram Country series features a video interview with Harris and performances of three songs off the album: "Six White Cadillacs," "Home Sweet Home," and "Darlin' Kate." Watch all of these videos here.

k.d. lang and the Siss Boom Bang have returned home to California after several weeks' celebration of their new album, Sing it Loud, with TV and radio appearances around the world. They close out this weekend's Stagecoach festival in Indio, California, with a Sunday night set. lang can be heard on BBC Radio 4's Saturday Live this weekend, talking about her passion for martinis. Watch her performances of the Sing it Loud song "Inglewood" from the CBC's Q and ABC Australia's Art Nation here.

Emmylou Harris's new album, Hard Bargain, is out now. She performs at Bowery Ballroom tonight and on the Late Show with David Letterman tomorrow. The Washington Post says Hard Bargain is "lovely and understated and will only further Harris’s reputation as a paragon of gentle dignity and forbearance." USA Today gives it four stars and calls it "exquisite." Paste says Harris continues to create "some of the best country-influenced music being recorded today." Country Standard Time says the album "marks another triumphant recording in a career filled with memorable work." In a new video, Harris talks about her songwriting and recording the new album; watch it here.

Emmylou Harris, whose album Hard Bargain is due out tomorrow, is the subject of a feature profile in the New York Times Sunday Arts & Leisure section, which says the new album "is suffused with kindly intimacy, acknowledging sorrows and reaching past them." The AP says her new songs are "up to her high standards." Harris also spoke with The Canadian Press and with the Los Angeles Times, which cites "her unwavering compassion throughout her career for the underdog, oppressed, the voiceless." The video for the song "Six White Cadillacs" has premiered on Garden & Gun, which says the album "packs a powerful, bluesy punch"; watch the video here.

Emmylou Harris performed songs from her forthcoming album, Hard Bargain, at LA's El Rey Theatre last night, with Ryan Adams offering a surprise guest opening set. She performs at New York's Bowery Ballroom with another surprise special guest opener on Tuesday. Harris appeared on PBS's Tavis Smiley show earlier this week. "Harris is admired as much for her straightforward songwriting as for her expressive singing," says the show. "Forty years into her career, she's still doing both with ... Hard Bargain." Watch the show here.

As noted earlier this week in the Nonesuch Journal, Chris Thile and Michael Daves, whose debut duo album, Sleep with One Eye Open, is due out May 10, have launched a new web site about the project. The site launched with two videos, including the first in a series of performance videos captured live at Rockwood Music Hall in New York City. Now comes the release of the latest video in the series: Thile and Daves performing Lester Flatt's "My Little Girl in Tennesse." Watch it here.

k.d. lang and the Siss Boom Bang bring to a close their weeklong celebration of the UK release of their new album, Sing it Loud, with an appearance from lang on The Graham Norton Show tonight on BBC One and an encore presentation of their performance on Later ... With Jools Holland tonight on BBC Two. Last night, BBC Radio 2 In Concert aired a full concert from lang and the band; watch "I Confess" from the show here and see a whole gallery of photos from the event at nonesuch.com/media.