The pianist Ran Blake seems to hear other people's music through a kind of creative seance; in the process it becomes transformed. On "Driftwoods" (Tompkins Square), a new solo piano record, he takes a tightly written old pop song - like "Dancing in the Dark," "Unforgettable" or "Lost Highway" - and reveals behind it a slow-moving fantasia, full of shuddering harmony played with the sustain pedal down. He puts stops and elongations into each tune, making it move like a sleepwalker until a hard blues phrase wakes it up. He's been doing this for nearly 50 years, forming his own canon of composers and performers from across the best of midcentury jazz, gospel, soul and classical music, and he's still in great form