See post below. I listen to this as often as possible and still have not tired of it.I loved the Hearts of Space and Echoes - class programs. One of the guys I used to hang with back in college listened to HoS when he painted. He is now an internationally recognized astronomical artist and a damn good one too. He gave me a lot of his earlier works because he needed the room (aka kids' college fund.) It was fun to hang with him, get in an altered state, listen to HoS and watch him paint.....Colin