Odilon Redon was a painter, lithographer, draughtsman and pastellist, as well as a writer, critic, and musician. As so many symbolists he was fascinated by synaesthesia, the idea that an experience can be more intense when several senses are solicited together. By addressing some of Redon’s favourite themes, this publication shows how he transposed literary and musical motifs into his own work and how he reinvented such themes over and over again creating new associations and meaning.