Tonight's concert showcases a couple of progressive musicians who have mightily influenced everyone playing new acoustic music today -- including some who don't even know they've been influenced. Bruce Molsky mixes the old-time Appalachian soul of Tommy Jarrell with Delta blues, Celtic music, eastern European and West African styles, and whatever else he might become interested in. And as a singer he has a talent for getting to the heart of the song alone or with fellow musicians; guitar, fiddle, or banjo in hand, Bruce Molsky has been exploring traditional music from an astonishingly broad range of cultures over the past two decades, synthesizing them and refracting them through his own evolving skills and sensibilities. And fiddler Darol Anger has been shaping the forward edge of acoustic music since his days as a member of the David Grisman Quintet in the 1970s and 1980s. He has pushed and ultimately erased the boundaries that separate bluegrass and traditional American string music from jazz, world music, and the avant garde. Darol's Republic of Strings band has been a training ground for a host of young musicians, and he helped create a host of innovative new groups, including Psychograss and the Turtle Island String Quartet.