It's tempting to say Locked Down is the Doctor's long-overdue return to the psychedelic voodoo meditations of Gris-Gris and Babylon. After all, this Dan Auerbach-produced effort is awfully trippy in places. Yet the music is decidedly modern in its hyper-awareness of pop-music history, from vintage New Orleans R&B to the fuzz of modern garage rock. The sublime "Ice Age" bubbles like the vintage stuff, yet there's a subtle hip-hop strut lurking in its groove. This idea is even more successful on the funky "Eleggua" (dig that Creole jive). Though Dr. John is now 71, his voice still sounds great.