"John Milton Cage Jr. (September 5, 1912 - August 12, 1992) was an American composer, music theorist, writer, philosopher, and artist. A pioneer of indeterminacy in music, electroacoustic music, and non-standard use of musical instruments, Cage was one of the leading figures of the post-war avant-garde. Critics have lauded him as one of the most influential American composers of the 20th century. He was also instrumental in the development of modern dance, mostly through his association with choreographer Merce Cunningham, who was also Cage's romantic partner for most of their lives.

Cage is perhaps best known for his 1952 composition 4′33″, which is performed in the absence of deliberate sound; musicians who present the work do nothing aside from being present for the duration specified by the title. The content of the composition is not "four minutes and 33 seconds of silence," as is often assumed, but rather the sounds of the environment heard by the audience during performance. The work's challenge to assumed definitions about musicianship and musical experience made it a popular and controversial topic both in musicology and the broader aesthetics of art and performance. Cage was also a pioneer of the prepared piano (a piano with its sound altered by objects placed between or on its strings or hammers), for which he wrote numerous dance-related works and a few concert pieces. The best known of these is Sonatas and Interludes (1946-48).

His teachers included Henry Cowell (1933) and Arnold Schoenberg (1933-35), both known for their radical innovations in music, but Cage's major influences lay in various East and South Asian cultures. Through his studies of Indian philosophy and Zen Buddhism in the late 1940s, Cage came to the idea of aleatoric or chance-controlled music, which he started composing in 1951. The I Ching, an ancient Chinese classic text on changing events, became Cage's standard composition tool for the rest of his life. In a 1957 lecture, Experimental Music, he described music as "a purposeless play" which is "an affirmation of life - not an attempt to bring order out of chaos nor to suggest improvements in creation, but simply a way of waking up to the very life we're living"."

"Swiss pianist Judith Wegmann started to play the piano at the age of six. Shereceived her education at the famous Jazz School of Lucerne and the Swiss Jazz School of Bern with Roberto Domeniconi, Olivier Truan and ChristyDoran, focusing on Modern Jazz and Free Improvisation. Subsequently she earned a Bachelor and a Master's degree with highest distinctions in Classical Studies(Pedagogy and Piano) from the Music Universities in Neuchâtel and Lucerne. She continued studying with renowned musicians including Sebastian Risler, Karl-Andreas Kolly, Tobias Schabenberger, and Gerardo Vila, and attended Master Classes in Switzerland, France and Austria. Recently,she completed a second Master's degree at the Conservatory of Basel (with Fred Frith and Alfred Zimmerlin), concentrating on free improvisation and Contemporary Music.

As a classical pianist Judith performs on stage on a regular basis and in different chamber music formations. Her ability to switch between different genres allows her to engage in classical, contemporary as well as improvisation-based projects. Judith frequently conceptualizes concert programs, taking management responsibilities from the early stages of planning to the public performance. Her concerts have been performed in Switzerland as well as abroad - for example "Bach, Schumann et l'ombre de Nico" with Alexandre Caldara (F/CH, 2006) or the performance series "Outdoor-Dialoge" with Claudia Bucher (2009/10). Cross-disciplinary projects are an important aspect of her work. Collaborations with composers, visual artists and writers foster new approaches and paths, as in"Schwarzberg" with Swiss composer Werner Bärtschi and Arno Camenisch (2011). She was hired bythe "Kunsthalle Basel" for the widely celebrated Swiss premiere of afro-american composer Julius Eastman's "Songs for a mad King"in 2013. In thesame year she participated in the production "Manon -Soundtrack des Lebens" for the "young stage" of the theater Biel-Solothurn. Further projects are planned for the near future.

In 2011 and 2015 she was awarded a distinguished grant "Förderpreis" by the canton of Zug, Switzerland, which supported some of her most innovative projects. In 2013 she founded the New4Art Ensemble. Her work with this ensemble was awarded a prize by the city of Biel "Werkbeitrag". This award she also received in the years 2014 and 2015. Judith has been a member of the board of the Society of Free Improvisation ("Werkstatt für die freie Improvisierte Musik") in Bern since 2015 and is head of their"open workshop-". In 2017 her first Solo CD was released by HatHut records,which received a positive international reiew."

"Marlies Debacker is a Belgian pianist and performer of free improvised music, free jazz as well as contemporary classical music based in Cologne. She does extensive research on the sound possibilities of her instrument with a focus on resonance, pedal work, inside piano playing and the use of various preparations, thus allowing her to move between the conventional sound of a piano and various percussive and pseudo-electronic sounds. Apart from playing the piano she often performs on vintage keyboards as well.

Following her bachelor studies at the Koninklijk Conservatorium Antwerp, she studied her masters degree at the Hochschule für Musik und Tanz Köln, followed by a masters degree in Contemporary Music at the Folkwang UdK Essen, with Benjamin Kobler and Prof. Barbara Maurer.

Debacker is a curator of the 'Plattform Nicht Dokumentierbarer Ereignisse' - a concert series for improvised music that has an over 15 year long tradition in Cologne. Debacker is also member of IMPAKT, Cologne's young collective of improvisers. She is an active performer of contemporary music, solo and with Trio Abstrakt.

Debacker performed at various festivals such as Acht Brücken Köln, Biennale del arte Venezia, IMPULS! Graz, PGNM Biennale Aktueller Musik Bremen, Serious Series Berlin, Klangspuren Schwaz, NOW!-Festival Essen, has participated in theatre works of Schauspiel Köln ("Aus dem bürgerlichen Heldenleben") as well as other transdisciplinary projects and has been invited to residencies such as "human noise congress 2019" "