Saxophonist Steve Griggs, synthesist Ruben Griggs, and percussionist Greg Campbell reunite as Dowsing, a free-improv interplay between acoustic jazz and ambient electronics. Imagine John Coltrane at peace, scanning the crepuscule on a Southern California beach, his toes in warm ebbing waves, birds darting above in dimming dusk, the boom of a low-rider rumbling in the distance, a nearby bucket drummer riffs and rocks. Where is the source of all this magic? Dowsing taps it gently on your eardrums.