When Ellie Goulding emerged two years ago, few would’ve compared the strummy singer- songwriter to currentU.K. pop wild child Jessie J. But producer Starsmith — who’s remixed Katy Perry and Lady Gaga — nudged Goulding onto the dance floor, where she’s nowJessie’s good-girl counterpart, blending folky melodies with amped-up ’80s-style synths and beats. On this debut full-length, already a U.K. No. 1, she glides through blippy anthems (“Starry Eyed”), pumping disco (“Animal”), and delicate grooves (“Lights”) with a pixie-ish voice that’s one notch sweeter than Metric’s Emily Haines. Her closer, a cover of Elton John’s “Your Song,” is everything Gaga’s Grammy version wasn’t — a tender, vulnerable gift.