This obscure record from 1971 has long been considered a classic of the genre, and the first track, the 13-minute certainly lives up to its reputation, as the group goes into dark that sounds like something between and , with lots of long keyboard drones, a crunchy guitar riff, some acid guitar licks, and some distorted spoken vocals, as well as some higher-pitched wordless chanting. Unfortunately, much of the rest of the record does not live up to the promise of that first track, coming off like a typical early-'70s band, with belted vocals and maybe some occasionally interesting guitar work. has enough energy to be , and certainly its chorus of "do you wanna die" doesn't weaken that impression. Far more notable is the track a sinister piece that alternates between echoed-spoken vocals and intense guitar solos. The rest of the original album is too mainstream, but thankfully the CD adds another album's worth of bonus tracks, and some of these are really good, especially the original full-length version of a 24-minute tour de force of guitar solo blitzkrieg between a variety of segued pieces, some of which are far better than the two-minute cut that ended up on the LP. Other bonus tracks include some versions of songs and a stripped-down version of ~ Rolf Semprebon