He wrote the music for Scott-Heron’s astonishing streams of social consciousness – and then his royalties got cut off. The jazz-funk artist explains why he focused on a comeback instead of lawsuits

With the dreamlike film Horse Money, Costa has returned to his most powerful and enduring subject: the Cape Verdean diaspora who inhabit Lisbon’s shadows. He explains how the project began as a collaboration with the US rapper and poet

Since their stunning 2009 debut, the xx have kept their lives out of the spotlight. But for how much longer? Tom Lamont joins them on tour in LA