Milan Adamčiak was a conceptual artist who was a performer, composer, and musicologist. He is considered one of the most important representatives of Fluxus in former Czechoslovakia.
He graduated in cello at the Conservatory in Žilina, and then musicology at the Faculty of Philosophy in Bratislava, where he later taught. In the mid-1960s, he started making new music.
In 1965, during a visit to Warsaw, he had the opportunity to participate in happenings, which opened the door for him to collaborate with John Cage, who in 1992 invited him to Perugia to join in his production. He also researched 20th–century music and the connection between music and fine arts.
He was a member of various art groups, and in 1989 he founded the Transmusic comp – an ensemble of unconventional music. In 1990, with Július Koller and Peter Rónai, he founded the New Seriousness art group and launched the FIT – Festival of Intermedia Creativity (Bratislava, 1991 and 1992). Since 2005, he has collaborated with Michal Murin on the social project Altruism as Arttruism.