Guo is a multidisciplinary duo formed by Daniel Blumberg and Seymour Wright. On GUO4, their first release for Mute and the latest in an ongoing series, the pair have collaborated with Crystabel Riley (drums), Fran Edgerley [Assemble] (text) and Peter Strickland (film). The name Guo itself is ancient Chinese for a metal vessel, or cooking pot, and the resulting work layers alto saxophone, electric guitar, feedback and metal distortion alongside the distinctly-voiced 'ekphrasis' response from a range of collaborators operating across different mediums. The album was mixed by Marta Salogni. It also features original etchings by Guo and stills from the film. Previous releases have included ekphrasis by the English musician, author and professor, David Toop (GUO1) and the American filmmaker (Childhood of a Leader & VOX LUX) Brady Corbet (GUO2).