Music

Roomful of Teeth is an exciting young vocal octet founded just three years ago and directed by Brad Wells. And if the group's name is a little, um, in your face, that's entirely intentional. Their eponymous debut album on New Amsterdam Records (funded via Kickstarter) is a thoroughly 21st-century re-imagining of a capella vocal music — experimental, multi-textured and more than ready to blur the lines between pop and art music.

Minnesota, a band featuring singer-songwriter Peter Himmelman, makes its first appearance on Mountain Stage, recorded live in Grand Marais, Minn., in partnership with the North House Folk School. Himmelman appeared on Mountain Stage many years ago — way back in 1992 and '93 — but this is his first outing with Minnesota.

Alt-J (stylized as ∆) may be the most successful new British band of 2012 — a favorite to win the Mercury Music Prize in November and a Top 20 chart phenomenon in the U.K. The group, which chose its name from the mathematical symbol for change, made a splash with its debut album, An Awesome Wave, which came out in September. The record mixes upbeat indie rock and brooding synths with vocals that sound like no one else's in music today.

The Great American Canyon Band is a Baltimore indie-folk act featuring husband-and-wife duo Paul and Krystal Jean Masson. The pair's first single, "Tumbleweed," is a lovely, dreamy piece of countrified rock, destined for road trips. The rest of the self-titled EP came out in May, and an additional track, "Young Lady," was released on Sept. 5; it's available for download here.

Bringing blues music to the Top 40 isn't easy: Only a handful of musicians have done it in the 30 years Robert Cray has spent winning awards, selling millions of records and otherwise kicking around on the national stage. But Cray has, crossing over from blues-club stages to arenas with the double-platinum 1986 album Strong Persuader and its single "Smoking Gun," and has continued to stick around as one of the most reliably gifted and accessible guitarists around.

Trampled By Turtles makes its second appearance on Mountain Stage, recorded live in Grand Marais, Minn., in partnership with the North House Folk School. Born in the early 2000s as the duo of singer-songwriter Dave Simonett and mandolinist Erik Berry, the band has since grown into a quintet and released six albums.