John (“the semi-conductor”) is an open-source software designed to help collective free improvisation. It provides generated screen-scores running on distributed, reactive web-browsers. The musicians can then concurrently edit the scores in their own browser. John is used by ONE, a ensemble playing improvised electro-acoustic music with digital musical instruments. One of the original features of John is that its design takes care of leaving the musician’s attention as free as possible.
John was presented at the TENOR’2018 conference in Montreal, CA [pdf here].