Amazing split tape between two of the most iconic grinding bands from Germany: Yacopsae and Tumor! The first part features the full throttle speed freaks from Hamburg with a very rare reharsal recorded in 1992, between their first demo and the groundbreaking "Krank ist normal" EP. Eleven songs of breath stopping fastcore!!! Then, the "mother" band of Yacopsae : Tumor! Twenty unreleased horrendous noisegrind blasts from the "Implosion of bowels" tape, released in 1990. Old school mayhem in the vein of Sore Throat and Fear Of God!