Amon Düül II's first album is not a far departure from the tribal jams of their first incarnation (minus the "II"). Lots of moaning vocals, repetitive riffs and exotic sounds. The obvious difference here is that melodies actually do show up. Tempo changes and dynamic shifts occur regularly within the same song. Kanaan, the album's opening track is a great example. The way the song shifts from middle-eastern styled guitar noodling to full on drums and vocal assault and back again is stunning. The progressive rock touches are nascent here and sound a bit amateurish at times, but it's all a part of it's charm. Like the later Tanz Der Lemminge, the album's structure is all over the place. No common sound here. The title track is the group's Sister Ray, a twenty minute jam which varies in quality. The CD reissue includes five bonus tracks which are very psychedelic and a are nice addition to the album.