What can our ears really perceive when music deviates from a norm whose codes are no longer our own? Geoffroy Jourdain explores the 'strange harmonies' characteristic of the late Renaissance, as in the microtonal pieces of Nicola Vicentino (which divides the octave into 31 notes in a nod to Ancient Greek music). In her new work VicentinoOo, Francesca Verunelli pays tribute to him by following his example.