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The article discusses the research into the collaboration between classical and jazz musicians, who have created a joint 20-strong ensemble to rehearse the music of Anthony Braxton. It is a follow-up to our previous paper, Joining Jazz and Classical Musicians in a Single Improvisation Ensemble (Opus Musicum, vol. 51, 2019, No. 3, pp. 26–39), which describes the process of finding common means of expression during non-idiomatic improvisation. To discuss the new sound possibilities in a multi-genre ensemble, we have chosen conducted improvisation using selected musical pieces, including Braxton’s Language Types and Composition No. 174, which is a combination of jazz, experimental and contemporary music, with open instrumentation mixing improvisation, classical and original notation. The research has confirmed our initial hypothesis, i.e. that introducing partial organization in an improvisation ensemble can eliminate or at least reduce previously noted shortcomings and risks of free improvisation and lead to the creation of a functional collective performance, while still retaining the desired spontaneity, creativity and enjoyment.