“I Am the Billy Childish” crows the title of this show, curated by the protean Matthew Higgs. The Billy who? The British punk rocker with the killer work ethic. Now fifty-one, Childish has recorded scores of albums, published five novels and many books of poetry, and painted hundreds of canvases, in an impasto-happy style that can suggest Edvard Munch’s workmanlike second cousin. The subjects of his new paintings bristle with drama: the German mountaineer Toni Kurz’s tragic last climb, a soldier at Wounded Knee, volcanoes erupting. Even the quieter works feel charged, as brushstrokes cohere into an image of a shepherd in a field or the Finnish composer Jean Sibelius taking a walk in the woods. Upstairs, a room lined with ephemera—album covers, zines, books—rounds out this portrait of a relentless and charismatic creative spirit at the top of his game. Through Jan. 21.