Lady Gaga returned to pop with the scorching disco-rock jam "Perfect Illusion" Thursday, and the track sees the star reviving her solo career after mixed reactions to her experimental 2013 LP Artpop. Still, in the last three years, Gaga has been anything but quiet, releasing a Grammy Award-winning album of duets with vocalist Tony Bennett titled Cheek to Cheek and getting an Oscar nomination for the Diane Warren collaboration "Til It Happens to You."
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