Turn Blue is the eighth studio album by American rock duo the Black Keys. It was released through Nonesuch Records on May 12, 2014, and co-produced by Danger Mouse and the duo. The record was their fourth collaboration with Danger Mouse, following their previous studio album, El Camino (2011), which was their biggest commercial and critical success to that point. For Turn Blue, Danger Mouse reprised his role from El Camino as an equal songwriting partner alongside guitarist Dan Auerbach and drummer Patrick Carney.