Deutsche Grammophon presents the third physical release from Max Richter's Retrospective catalog, Infra. Written for piano, electronics and string quartet, Infra is an expansion on Richter's score for Wayne McGregor's ballet of the same name that was created as a response to the London bombings on 7/7. Infra follows Richter's latest album, Three Worlds: Music from Woolf Works, an album featuring his score for another McGregor ballet, Woolf Works. This LP version of Infra also features the bonus track, "Sub Piano."