Born in Leuze (Hainaut) around 1430, Johannes Martini was initially active in Konstanz, then in Milan and Ferrara, where he died on 23 October 1497. Closely connected with the d’Este family, he was paid in 1479 for the production of a large volume of vocal music for the ducal chapel of Ferrara. He is also the key contributor to the Casanatense Chansonnier, which was compiled for the marriage of Isabella d’Este to Gianfrancesco II Gonzaga in 1490. Thanks to these collections, we can for the first time present a glimpse of the immense output (motets, psalms, mass movements, chansons, instrumental chansons) of one of the most refined composers of the generation before Josquin’s.