[youtube]http://www.youtube.com/watch?v=zIX480s55qg[/youtube] Tonight, blues guitarist Alvin Youngblood Hart opens for the Radiators at Tipitina’s as their victory lap enters its last months. Hart’s been a more frequent presence in New Orleans in the last year; here he is with his power trio, Alvin Youngblood Hart’s Muscle Theory, playing “Big Mama’s Door” live.