Mathias Grassow is musician born in Wiesbaden, Germany in 1963. He learned to play guitar, keyboards and flute, and has been occupied with music since the late 1970s. Initially he worked on electronic and new age music, later turning to more experimental sounds. In 2010, Mathias Grassow collaborated with Agalloch on the compilation Der Wanderer ?ber Dem Nebelmeer.
In 2010, Mathias Grassow collaborated with Agalloch on the compilation Der Wanderer ?ber Dem Nebelmeer.