At the end of the project, in fact, the production studio will be entrusted mainly to the management of the inmates themselves, who will be able to work in it and, at the same time, continue to train other inmates through the non-formal methodology of peer-learning. We will implement and compare at least 5 trials in different countries, of which we foresee a variety of efforts, from activating training paths (and then post-prison work development) to setting up mixing and production studios permanently organised and functioning within prison facilities.