If “Dream Tennis” was any indication, Heatsick has struck a nerve with his singles that stretch preset washes of polyphony through sunset-hued landscapes of disco and house. Equipped with only a Casio keyboard, he has played alongside everyone from Omar Souleyman to DJ Harvey, Daniel Wang and Legowelt, and has demonstrated his ability not only to extend his keyboard to its limits, but to transcend its musical territory, opening up a diverse range of styles, genres and gestures to his dance-addled mimicries and musings.