4 p.m.-11 p.m. Fri.; 2 p.m.-11 p.m. Sat.; 2 p.m.-9 p.m. Sun.
Downtown Gretna; www.gretnafest.com
Thirty-eight years ago, the pubescent Doobie Brothers (pictured) released second album Toulouse Street ("Listen to the Music," "Jesus Is Just Alright"). This weekend, the graybeard Brothers present 13th album World Gone Crazy as part of the Gretna Heritage Festival's grab bag of locals, visitors, guilty pleasures and legends (Los Lobos, REO Speedwagon, Irma Thomas, R. Scully). Daily admission $15, $40 weekend pass.