1989 
The name "Klangforum Wien” appears for the first time in the programme notes on 30th January; at this concert Annette Bik (violin), Donna Wagner and Reinhold Brunner (clarinet) make their debuts – concerts at Secession, in the Schubert-Saal and the Brahms-Saal of the Konzerthaus as well as in the Odeon – music festival for Roman Haubenstock-Ramati on 27th February – "Der Magische Klang – ein Fest für Giancinto Scelsi" at musikprotokoll in Graz – debuts by Gundelind Micko (now Jäch-Micko, violin) and Bendikt Leitner (cello). 

1988 
Five concerts at the Secession, one at Theatre Gruppe 80 – Lukas Schiske makes his debut in a percussion programme with pieces by Essl, Liberda, Richard, Cage and Haubenstock-Ramati – Marcus Weiss plays his debut piece by Mauricio Sotelo for solo saxophone – Sylvie Lacroix (flute) makes her debut – in December Marian Vasile (oboe) makes his debut in Karlheinz Stockhausen’s "Kreuzspiel".

1987 
A total of nine concerts, all at the Wiener Secession. For the concert on 18th June extra musicians from the Chamber Orchestra of Europe - who happen to be in Vienna at the time - take part at short notice and enthusiastically accompany "Octandre” by Edgard Varèse and "Palimpsest” by Iannis Xenakis – works by the following composers also performed that year: Ablinger, Berio, Birtwistle/de Machaut, Delz, Furrer, Glaus, Globokar, Haubenstock-Ramati, Hölderle, Huber, Ibarrondo, Juon, Kagel, Lachenmann, Lehmann, Liberda, Ligeti, Nono, Roque d’Alsina, Scelsi, Scarrino, Strawinsky, Tower, Varèse, White, Wildberger and Xenakis – ensemble debuts by Lila Brown (viola), Uli Fussenegger (double bass) and Marcus Weiss (saxophone). 

1986 
First performance given at the Wiener Secession, on the programme for 21st March: works by George Crumb, Roman Haubenstock-Ramati, Beat Furrer and Kazuo Fukushima – two further concerts in Palais Palffy – one concert as part of the Schweizer Musiktage in the Schubert Saal of the Vienna Konzerthaus.

1985
March: meeting of founding members and programme discussion – first concert of the so-called "Societé de l’Art Acoustique” on 13th June in the Palais Liechtenstein, on the programme: "Bagatellen für Bläserquintett” by György Ligeti, "Traktat” by Peter Ablinger, "Limericks” by Pawel Szymanski, "Rest zweier tragischer Szenen” by Bruno Liberda as well as "Music for Mallets” by Beat Furrer; performing: Alexandra Bachtiar and Florian Kitt (cello), Christiane Hellmann (flute), Nancy Wu (violin) and the Mallet Trio – second concert on 8th October in the Schubert Saal of the Vienna Konzerthaus with works by Szymanski, Varèse, Furrer, Haubenstock-Ramati and Birtwistle; performers include: Anne Tedards (soprano), Dieter Flury (flute), Mathias Dulack (cello), Christian Ofenbauer (harpsicord), Ernst Reiter (clarinet) – on 14th November at Palais Liechtenstein performance of works by Liberda, Berg, Webern, Debussy and Feldman; then there again on December 12th pieces by Scelsi, Furrer, Huber, Messiaen and Feldman.