On the December 14 telecast of the U.K.’s Royal Variety Performance, Nicole Scherzinger hit some serious high notes. To celebrate The Phantom of the Opera's 25th anniversary, the former Pussycat Dolls front woman and current X Factor judge sang the show's title song from, wowing the audience with her singing chops. Scherzinger had four phabulous Phantoms joining her in the big number: Simon Bowman, Earl Carpenter, Ramin Karimloo and John Owen-Jones. Click below to watch Scherzinger’s mesmerizing performance.