“Beatriz Ferreyra turned 84 this year and is still composing music – dense, immersive sound sculptures – as the last surviving member from the field of mid-20th-century pioneers that included the likes of Edgard Varèse and Pierre Henry. She was born in Argentina but has spent the last six decades in France, where she relocated in 1961 to study with Nadia Boulanger and György Ligeti. It is tempting to see Ferreyra as a Parisian Delia Derbyshire but a new anthology of Ferreyra’s work, Canto+, shows how much more intense her “acousmatic” music can be. Musique concrète is often more interesting to discuss than actually listen to, but there is a curious beauty to some of Ferreyra’s work: distended screeches, drones and ambient hums that are cleverly assembled so that they gently throb and glisten quite hypnotically.” - John Lewis, The Guardian