If bluegrass lore has it right, Del McCoury left his spot as Bill Monroe's lead vocal man in The Blue Grass Boys to marry. In that case, karma met him full circle, rewarding his familial dedication with perhaps the best bloodline bluegrass band in the music's history. They come dressed in suits and smiles, picking, plucking and clucking high, lonesome songs and fiery vamps at breakneck speed. And whether it's a sublime take on Richard Thompson's "1952 Vincent Black Lightning" or a dexterity-driven instrumental, they never miss a note--or a flash of brilliance. The Del McCoury Band plays Stewart Theatre at NCSU in Raleigh on Friday, Jan. 21 at 8 p.m. Tickets are $32 for the public and $15 for students.