Born 1962 in Minden, Jörg-Peter Mittmann received his music education at the Detmold Music Academy and studied composition, theory and oboe with Giselher Klebe, Helmut Winschermann and Gernot Schmalfuß.

At the same time, Mittmann also studied philosophy and history, beginning in 1982 with support from the German National Academic Foundation. In 1992 he obtained his doctorate in Munich with a thesis on early German idealism. This was followed by publications focusing principally on themes of subjectivity, speech analysis and aesthetics; lectures and seminars at various universities (including Duisburg, Wuppertal, Bochum, Munich); many years of employment as teacher of music theory at the Music Academy in Munster as well as participation in conferences, mostly on issues dealing with music and philosophy.
In 1990 he was among the founders of the ensemble Horizonte and remains its conceptual and artistic director. In the meantime, approximately 40 concerts are presented each year by the ensemble of contemporary music, mainly with thematic guidelines and in collaboration with representatives of other arts.

Jörg-Peter Mittmann has received various prizes and awards, most recently the Cultural Advancement Award of Herford County 2000, the composition competition of East German Radio Brandenburg 2001, and the Cultural Prize of the state association Lippe 2002. In 2014 a portrait CD was released by Wergo in collaboration with Deutschlandfunk with support from the NRW Foundation for the Arts.