Musician and composer, Mathilde Proy first studied piano at the conservatories of Châlons-en-Champagne and Reims, then acousmatic composition at the conservatories of Lyon and Pantin.
Half of the duo Hannah Hajar with Jeanne Merone, an experimental music project with electronics, accordion and voice, she also officiates solo under the name Moth Trickery (piano and acousmatic composition).