Joana Masó (ADHUC-Universitat de Barcelona) and Éric Fassin (SOPHIAPOL-Université Paris 8) have just published the monograph Elsa von Freytag-Loringhoven. La artista que dio cuerpo a la vanguardia (Arcàdia, 2024). Elsa von Freytag-Loringhoven was an artist and poet forgotten by historians of the avant-garde, who did not include her in this movement. She embodied the New York Dadaism of the 1910s and 1920s, acting as an emancipatory model of the figure of the muse and practising performance avant la lettre in actions denouncing the artistic postulates of her contemporaries. With his sound poems and found objects, he embodied a moment of the avant-garde that Marcel Duchamp also fleetingly took part in, both challenging the fascination with authorship and the art market.