http://www.discogs.com/Esper-Home-Grown-Sounds-Of-Rush/release/5791927
Recorded in Maryland in 1975 and intended to be listened to while high, this is a high point (pun semi-unintended) of outsider/stoner/idiot-savant musique concrete. Originally released on vinyl, it's a sui generis blend of primitive synths, treated vocals, scraped metals and \"field recordings\" of a bong, all lovingly dosed with liberal amounts of delay and reverb.
Also chech reissue of this masterpiece on the http://emrecords.jugemcart.com/?pid=1187109 an buy if you like it.