Jessie J Performs John Lennon's 'Imagine' In Times Square On NYE

Jessie J performed in New York City's Times Square on New Year's Eve, playing several of her own songs, along with the classic John Lennon cut "Imagine." The event, hosted by Allison Hagendoff, also featured Demi Lovato and Daya as well as the famous ball drop.

"2015 has been such an amazing year and I'm going to be ending it with a bang in @TimesSquareNYC, performing live for the #NewYearsEve #Balldrop," J wrote on Instagram ahead of her performance.

"I can't wait to ring in the New Year with the @TimesSquareBall, an incredible crowd of revelers & everyone watching from around the world."

It is estimated that one million people flocked to NYC's Times Square to celebrate New Year's Eve.