These demoes prove that Richard has always been the musical mastermind behind the band. Not only did he write the whole Mutter album almost all by himself, this specific demo proves that Rammstein could have gone a very different way rather the path taken after the Mutter album. No wonder he started his side project :)
there's an unreleased song from around 2004 called "Holz" and the GEMA database says it has a track length of 4:57, only a few seconds off of this recording, perhaps this could be an instrumental of it?
This, and the other two instrumental demoes (#2 and #3), are written and recorded by Richard and originated from the Mutter-era. He most likely wrote these demoes as possible songs for Rammstein.
