Ellie Goulding's airy soprano is well-matched to dance music's massive beats, which has led to top-flight producers adopting her as a muse. Skrillex transforms her into an android before cloaking her in synth stabs on “Summit,” Greg Kurstin pairs her vulnerable coo with storming drums on the disco-glittery “Aftertaste,” and Xaphoon Jones drapes her vocal over sparse snaps and glitches on “Tessellate.”