text:  I'm John D. Liberto, and you're hearing Echoes from PRX. Ahead in this hour, Aztec feathered serpents, a famous song composed at an Indian ashram in the 1960s, and a ghost story. Aside from that, we'll hear Moby from his Echoes CD of the Month, Always Centered at Night, and a beautiful ambient chamber music track by O'Kerr. He's a French electronic artist with a taste for melancholia.