Les 4 saisons de l'Univers is a cycle of four astro-musical conferences (spring, summer, autumn, winter) in which my scientific narrative is accompanied by a group of professional musicians performing a repertoire written especially for each season by drummer and composer Arnaud Le Meur. Astrophysics and music interact and play together to give the audience a sense of the dynamics at work in the Universe. Transdisciplinary, immersive and participatory, the 4 Seasons of the Universe take place outdoors or indoors (duration: approximately 1.5 hours) and are accompanied by high-definition images projected on a giant screen, observations of the night sky (weather permitting) and discussions with the audience after the show.