The themes of this year's Folklife Festival are Hungary, endangered languages and African-American style and fashion. But the headliners of tonight's Ralph Rinzer Memorial Concert on the Mall are the Seldom Scene, a progressive bluegrass band that got its start in Bethesda in 1971. The group's exceptional musicianship and stellar harmonies have kept it on the vanguard of the national bluegrass scene for decades, despite lineup changes and the deaths of founding members John Duffey in 1996 in Mike Auldridge in 2012.

The Seldom Scene performs at the Black Rock Center for the Arts in March 2010. (Photo by Keith Case & Associates)

The concert is free, and runs from 6 to 7:15 p.m. The Scene will be previewing material for its new album, which will be released next year on Smithsonian Folkways Recordings. We picked a few videos of the Scene from YouTube, including one recorded a few weeks ago.

"Wait a Minute"

"Lay Down Sally"

"Born of the Wind"

"Oh Lord, Have Mercy on My Soul"