Around September 1968, the band enlisted the creative, highly rhythmic, but unstable and often confrontational American vocalist Malcolm Mooney, a New York-based sculptor, with whom it recorded the material for an album, Prepared to Meet Thy Pnoom.Krautrock Sampler. Head Heritage, 1995, pp. 51-52 As "Inner Space", and with both Johnson and Mooney present, the band appeared briefly in the 1969 film Kamasutra: Vollendung der Liebe backing singer Margarete Juvan. Unable to find a recording company willing to release the album, the group continued its studio work until it had material for what became its first release, Monster Movie (1969). This album contained new versions of two songs previously recorded for Prepared to Meet Thy Pnoom, "Father Cannot Yell" and "Outside My Door". Other material recorded around the same time was released in 1981 as Delay 1968. Mooney's ranting vocals emphasized the music's sheer strangeness and hypnotic quality, which was influenced particularly by garage rock, psychedelic rock and funk. Repetition was stressed on bass and drums, particularly on the track "Yoo Doo Right", which had been edited down from a six-hour improvisation to take up a mere single side of vinyl. Liebezeit's tight but multifarious drumming was crucial in carrying the music.
