This Nuremberg group began to play together as early as 1961 under the name Blizzards. They used the name Improved Sound Limited from 1966 onwards. In the late sixties, they specialised in delivering soundtracks for German television and movies by Michael Verhoeven. "Engelchen Macht Weiter, Hoppe, Hoppe Reiter" (1969) was the soundtrack from a Verhoeven film, released on the same label as the first Gomorrah album. I don't know this one (presumably a late beat rock effort), but their self-titled double album for Liberty was very inspired by the American folk-rock of Bob Dylan and The Band.

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