After departing the flute-centered Ihre Kinder in 1972, guitarist Muck Groh formed the jazz-rock Aera. Identical in audio to mid-period Embryo, Ihre Kinder relied seriously on flutes and saxophones. The band’s initial record, the all-instrumental Humanum Est, was completely compiled by the guitarist. Nevertheless, by enough time of their second record Hands Und Fuss (1976), the musical command of the music group had turned to wheelchair-bound saxophonist and flautist Klaus Kreuzeder, who included vocals on a few of his tracks. Even though the group disbanded shortly after their sophomore work, Kreuzeder reformed the group in 1978 and released four albums before finishing the group once and for all in 1982.