This lush and earthy collaboration between Mark Knopfler and Emmylou Harris may sound like it rose from an amiable weeklong studio session, but the 12 tracks that make up All the Roadrunning were actually recorded over the span of seven years. The boot-stomping "Red Staggerwing" and the gentle "Donkey Town," both of which were bumped from Knopfler's Sailing to Philadelphia record, give the ex-Dire Straits leader a chance to flex his country muscle, while the wistful title track spotlights the lovely Harris, whose playful demeanor and guarded confidence helps keep Knopfler in check during his sometimes excessive soloing. The two couldn't be more at odds vocally, but Knopfler's laconic drawl is like an easy chair for Harris' fluid pipes, and standout tracks like the 9/11-inspired "This Is Goodbye," the wistful "Beachcombing," and the infectious single "This Is Us" come off as effortless statements of vitality from both camps.

This is the album debut from the Nash Ramblers, Emmylou Harris' acoustic backing band featuring Sam Bush and Roy Huskey, Jr., recorded over three nights in the former home of the Grand Ole Opry. Harris' choice of songs strikes a balance between hillbilly classics and folk-influenced rock, with Bill Monroe receiving the heaviest tribute but sharing space with Tex Owens, Bruce Springsteen, and John Fogerty.

Like 1999's tribute to Gram Parsons, Return of the Grievous Angel, this successful collection revives the tired "tribute" concept and applies it in homage to a key figure in country music. Interpreting songs from across Hank Williams's short and troubled career, a range of high-profile artists use different approaches with equally gratifying results. Tom Petty, Sheryl Crow, and Hank Williams III play familiar songs with traditional arrangements (Ms. Crow's yodel is an eye opener); Beck, Mark Knopfler, and Keb' Mo' stay closer to their own idioms. Keith Richards's reedy vocal makes "You Win Again" all his own, and Bob Dylan, who has only rarely lent his services to these sorts of projects, leads his touring band through a blues shuffle on "I Can't Get You Off of My Mind." The estimable Lost Highway label has assembled an illustrious cast to sing the praises of the artist who inspired its name, and in doing so it has created a far better testament to its musical mindset than can ever be captured in the term Americana.

Portraits is a three-disc, 61-track box set covering Emmylou Harris' entire career for Reprise and Warner Records, which spans from 1974 to 1992. Not only does the box select highlights from classic albums like Luxury Liner, Roses in the Snow, and Blue Kentucky Girl, but it also features her early duets with Gram Parsons and selections from the Trio album she recorded with Dolly Parton and Linda Ronstadt. Portraits doesn't dwell too long on unreleased material – there are only five unearthed tracks on the entire set – preferring to sketch out a full overview of her career. While there might be a few favorite tracks missing, the box nevertheless fulfills its goals quite nicely – anyone looking for a comprehensive compilation of Emmylou's career will not be disappointed.

Emmylou Harris is an artist whose body of work is so consistently strong one could almost pull 20 songs at random from her catalog, string them together, and end up with a pretty listenable disc – which suggests that the real choices in putting together a "best of Emmylou" album has as much to do with what not to include as what should be on hand.