Portishead, British masters of sexy desolation, have not played a live show since they rocked Spain’s Benicàssim Festival back in 2015. (Portishead haven’t released any music in longer than that, but that’s a whole other story.) Next month, though, the group will return to the stage for a small benefit show in their Bristol hometown. Perversely enough, Portishead aren’t even headlining that show. IDLES will top the bill for the show, which is raising money for War Child’s efforts in Ukraine.