Since 1991 compositions, including some for the Ensemble Modern ‘Point of no Return’ 1993, ‘Berliner
Geschichten’ (Berlin Tales) 1999, for the Music Factory NRD ‘Parametrics’ 1993, for the WDR Big Band
‘JUBILEE’ 1996, ‘Inner Circles’ 1997, for the Biennial in Venice (1993) and the IMD / Darmstadt ‘Brandnächte’ (Fiery Nights) 1996.

1998-2005 compositions and arrangements of music for dramas, including some for the Berliner Ensemble ‘Leben will ich...’ (Life appeals...), the Schauspielhaus Dortmund ‘Mr Mazel’, the Staatstheater Mainz ‘KRONOS – KAIROS’ a musical recital with Hannah Schygulla, Manos Tsangaria, M. Stockhausen), the Schauspiel Frankfurt ‘Die Frauenfalle’ (The Women’s Trap) by Praetorius and for the Düsseldorf Schauspielhaus ‘The Seagull’ by Chekhov (2001) as well as ‘Wir schlafen nicht’ (We aren’t asleep) by Kathleeen Röggla and ‘The Cat on a Hot Tin Roof’ by Tennessee Williams, directed by Burkhard Kominski (2004), and work together with the directors Peter Palitzsch and Ari Zinger.

1999 founding of the group MIR with Manos Tsangaria (CD release on Academy Label / Edel Records)
and repeated engagement in Tsangaris’ music dramas as an interpreter and sound designer

Keyboard player/live electronics manipulator and soprano saxophonist in various formations like the WDR Big Band, Lalo Shifrin (Esperanto), James Morrison (On the Edge), Vince Mendoza, Peter Erskine, Michael Riessler, Peter Eötvös (in ‘ATLANTIS’), since 2002/3 also with the Sharoun Ensemble, the Berlin Philharmonic Orchestra and Heiner Goebbels (Tagebuch UA / Surrogate Cities / Ou bien Sunyata UA).

Many years of working together with the singer Maria Husman, the English composer Benedict Mason, the maker of short films Kirsten Winter, the Israeli film director Amos Gitai as well as many compositions of chamber music for various ensembles, lyrics set to music, workshops for producing electronic sounds (including some with the educational department of the Berlin Philharmonic Orchestra) and also sound installations and performance-like meetings with visual artists, most recently with Lucy & Jorge Orta (OPERA:tion Life Nexus 2002)
and Misha Bolouri in the action 1.000.000 Lichterstadt Berlin (Berlin, City of 1,000,000 Lights, 2004).

Since 2003 the composition of music for many documentary films (WDR/Arte/ZDP), including ‘Alfredo and his Model’ by Angi Welz-Rommel, produced by TAGTRAUM (music by Simon Stockhausen) for ZDF/Arte.

In 2004 the production of the CD ‘nonDUALITY’ by Simon & Markus Stockhausen as well as of the CD ‘ROYCE’ 11 pieces by Walter Quintus and Simon Stockhausen mingled.