text:  You're hearing Echoes from PRX and I'm John DiLiberto. Later in this hour, I talked to Tim Blake. In the mid-1970s, his album Crystal Machine and New Jerusalem were considered right in the mix with Tangerine Dream, Klaus Schulze, and Jean-Michel Jarre. And he had a better backstory with consequential stints in the bands Gong and Hawkwind. His first three albums have been released in a deluxe three-CD box set as Crystal Presence.