Dan Tyminski and Ronnie Bowman

To mainstream audiences, singer-guitarist Dan Tyminski is probably best known for providing George Clooney's singing voice in the film O Brother, Where Art Thou? In bluegrass circles, though, he's close to royalty—as a longtime member of Alison Krauss's band, Union Station; as an in-demand sideman; and as an occasional solo artist. Tonight, he'll join former Lonesome River Band member Ronnie Bowman for a night of bluegrass stylings.