CBS.com’s Live On Letterman webcast may be the best musical addition to late-night television since Fallon landed The Roots as his house band. After Ray LaMontagne and The Pariah Dogs performed “Repo Man” for the afternoon taping of Letterman, the Grammy award winner returned to the stage around 8pm for a 55 minute set. Equipped with his acoustic guitar, LaMontagne demonstrated why he is one of America’s next great folk singer-songwriters with a set featuring nine of the ten songs off his latest LP, God Willin’ & The Creek Don’t Rise.

To close out Wednesday evening’s telecast, LaMontagne took to the Ed Sullivan stage and showed that he also has a more upbeat side, with the blues-y “Repo Man” track. LaMontagne’s raspy vocals still dominated the track, but his acoustic guitar took a back-seat to the electric riffs of Eric Heywood and Greg Leisz. As Letterman points out, Jay Bellerose is a superb percussionist, attacking the drum kit with a single stick while keeping busy with the tambourine.

Watch both the Live on Letterman set and the actual Late Show performance below. Once again, a shout out is in order to The Audioperv for video assistance.

God Willin’ & The Creek Don’t Rise, is available now via Amazon.