The Musical Representations team explores the paradigm of computational creativity using devices inspired by artificial intelligence, particularly in the sense of new symbolic musician-machine interactions. The presentation will focus in particular on a line of research mixing the notions of interaction, musical memory and generative processes: composing generative agents at the scale of narration or behaviour. We will present the novelties of the DYCI2 library which implements the results of this research: a library of generative agents for performance and musical composition combining free, planned and specified, and reactive approaches of generation from a corpus.