"SZ ON SZUM" – k.ada & chfs (2025) / "Theater INNklusiv" – collaborative inclusive music-theatre-project (2024) / "Words without Paper" – bRt, Grossi, Lomas, Schiller (2024) / "ʃ" – Glöckner, Schiller, Schröck (2023) / "Maschinenmusik II" – Glöckner, Ressi, Schiller (2023) / "idle" – installation by pfd (2022) / "Theater INNklusiv" – collaborative inclusive music-theatre-project (2022) / "Glop II" – collaborative concert by Kauders (2022) / "01 @ Innsbruck" – exhibition of 0NULL1EINS – selection (2022) / "01 @ Interpenetration" – exhibition of 0NULL1EINS – selection (2021) / "Lichttrommel" – performativ opening by alemankale & chfs (2021) / "<dsdw>" – workshop with kids (2021) / "9 Sonnen" – group exhibition (2021) / "pfd @ <rotor>" – concert by pfd with bahoe books (2020) / "Central European University" – concert with Robert Lisek (2020) / "Die!Hundianer & Nurse" – concert with Hannes Schauer (2018) / "Familie Geschrey" – collaborative band-project (2018) / "Hathenter" – collaborative international band-project (2017) / "Helsinki & Radia" – radio-work with kaum (2017) / "1:4:0" – 14 years in-dust.org (2017) / "SO?" – 10 years StSts with Alfred Lenz (2016) / "Post Scriptum – Köln" – concert with Hölzl + Kindernay (2016) / "K+iller @ Sub" – concert with Manuel Knapp (2016) / "Kritikal Machines - Salzburg" – concert with Lisek + Knapp (2016) / "Art Faces Styria" – chfs feature (2015) / "XX-defekt" – work with Sandra Johrendt (2014) / "Kritikal Machines - Prague" – concert with Lisek + Knapp (2014) / "Kritikal Machines - Poznan" – concert with Lisek + Knapp + many others (2014) / "Post Scriptum - Eppan" – concert with Hölzl + Kindernay (2014) / ">\<|>/<" – workshop with kids (2014) / "K+iller @ Fluc" – concert with Manuel Knapp (2014) / "force dimensions" – cooperative concert with Interpenetration (2014) / ">\<|>/<" – workshop with kids (2013) / "Nights im Bunker" – collaborative music-theater piece (2013) / "Oswald" – workshop with kids (2013) / "Sound Device Dublin" – chfs featured (2013) / "Zehnt" – 10 years in-dust.org (2013) / "Noise Hours Maribor" – concert with many others (2013) / "XX-Tropf" – work with Sandra Johrendt (2012) / ">\<|>/<" – workshop with kids (2012) / "NULL0" – with Garfield (2012) / "XX-CityOfSchein" – installation with Sandra Johrendt (2011) / ">\<|>/<" – workshop with kids (2011) / "writing the future" – panel-discussion @ Impuls Festival (2011) / "Contamporary Composers Index" – chfs featured (since 2011) / "Schnapsidee Records" – chfs featured (2010) / "Crossings Jo´burg" – international residency (2010) / "MaMaMo" – workshop with kids (2010) / ">\<|>/<" – workshop with kids (2010) / "Radio Orange" – chfs featured (2009) / "discogs" – chfs profile (since 2008) / "Ö1/Zeitton" – chfs feature (2008) / "chfs adé" – good bye Forum Stadtpark (2008) / "GOPO" – part of GrazerOrganPipesOrchestra by Peter Jakober (2007/2015) / "mica" – chfs profile (since 2007) / "chfs+lenz on decks" – live: Ephel Duath (Earache, IT) & Jakuzi´s Attempt (AT) (2006) / "Studenzen Studios" – studio-house with Alfred Lenz (since 2006) / "Die Besachwalterung" – Photowork with Garfield, EXIL Graz (2005) / "Zerfall der Europäischen Union" – by Slobodan Kajkut, as Drummer (2005) / "Vexations" – 18 Hours-Eric Satie-Project at Styriarte, as Pianist (2004) / "vertikal infostruktur vögel feeling" – by Markus Krispel, as 2 hanged E-Guitars (2004) / "Jubbookov Revolt" – by Slobodan Kajkut, as big Drum (2004) / "Banderra Nerra" – by Slobodan Kajkut, as Bass-Voice (2004) / "Galle" – experimental Brunch, SUB Graz (2003) / "pianofeedbackdistortion" – Lenz + Schiller (since 2002) / "volume" – Improvisation with Lenz + Schauer, Kristallwerk Graz (2002) / "liquid underground" – Installation with Kristina Landrichter, Marienmühle Graz (2001) / "Vöckes" – concert for 2 Pianos und Electronics with Peter Jakober, Stadtsaal Vöcklabruck (1999) / "CUM" – band project with Mike Mairinger (1996) / "NCRNMCN" – band project with LM & SB (1993)