A creative process in which participants are directly involved, from the very beginning of the project, in the composition of a show or performance. GH artistically supervises the creation, acting as author and facilitator. These projects are supervised by other organizations where GH acts as DA.

In Passion Singulière, he proposed creative workshops based on body percussion, HBB and singing, and with the participants' content, a composition was written which was then performed by the participants. In Nord Pas de Calais, artistic and musical direction by Anthony Sauveplane. Participants: two choirs, children and adults, an amateur social theater group, a professional lyric choir. GH acted as HBB and led the artistic expression workshops;