Not mentioned in Fututre Days: Krautrock And The Building Of Modern Germany by David Stubbs (well in the index at least I'm only up to page 327) is Eroc's classic Eroc 1. What happened there Dave? No lost Krautrock classics eh?.......
Funnily enough a band Eroc (Joachim Heinz Ehrig) played drums for during the 70s Grobschnitt get some coverage in the book for all the wrong reasons. Stubbs gave Limbus (another obscure act signed to Brain) a listen but failed to check this treasure out. Recorded between 1970 & 75 and released on Brain records in 1975.