Bubbly meets manic on Shannon Taylor’s debut EP. On the emo pop Two-Faced, doused with Auto-Tune, the Hot Topic-minded YouTuber confesses a split personality (“cursed by a double-sided spell,” she sweetly sings on the title track), as effervescent keys and suspenseful beat drops play with the idea of contrast. She takes buoyant skate-punk cues from blink-182 on “Emergency Alert” and nods to EDM on the glimmering, ravey “All at Once.” Whether she’s channeling angelic or menacing vibes, her canny, mercurial approach conveys a prickly charge.