"Back in the pop arena after her detour into show tunes and pop standards, Lady Gaga unleashes her great big voice on a perennial pop subject: post-breakup fury and disillusionment. “Mistaken for love/It wasn’t love, it was a perfect illusion,” she belts, angry and tremulous. Lady Gaga and three producers — Mark Ronson, Tame Impala’s Kevin Parker and BloodPop — go for a 1980s-1960s dance-rock hybrid, with a Motown beat underpinning both electronics and guitars and an old-school Top 40 key change into the last verse. But the influence Lady Gaga still can’t escape is Madonna; the climax of the chorus, the words “perfect illusion,” use the same melodic line as “keeping my baby” in Madonna’s “Papa Don’t Preach.”