4. 4. 2008

Mathias Grassow & Bruno Sanfilippo - Piano & Drones 3 6:37 (Ambessence, M.Grassow+B.Sanfilippo, ad21Music 2008)

Thomas Weiss & Mathias Grassow - Calling I 8:36 (Quiet Calling, T.Weiss+M.Grassow, Musical Philosophy 2008)

Mathias Grassow & Thomas Weiss - Route of Mind 10:40 (Outland, M.Grassow +T.Weiss, Faria 2007)

Mathias Grassow & Jim Cole - Cathedral Dome (excerpt) 9:43 (Deep-Breath-Silence, M.Grassow+J.Cole, Practising Nature 2007)

Alio Die & Mathias Grassow - The First Bright Light 10.18 (Expanding Horizon, S.Musso+M.Grassow, Release Ent. 2003)

Mathias Grassow & Jiří Mazánek - Part 1 7:34 (Vnitřní cesta, M.Grassow+J.Mazánek, NextEra 2008)