Written by Sarah Iasiello, October 24, 2016

Taylor Swift delivered a knockout performance Saturday night in Austin, Texas by performing her ex-boyfriend Calvin Harris’ song “This Is What You Came For.”

Sitting at a piano, Tay debuted the rendition she co-wrote with her ex beau Calvin Harris and Rihanna to a crowd of 80,000 concert-goers.

Wildest dreams..

A photo posted by Taylor Swift (@taylorswift) on

🎤

A photo posted by Taylor Swift (@taylorswift) on

 Tay wows at her gig in Austin, Texas

“I’ve never played this song live before,” she said. “But if you know it, maybe you could sing along, and then I could get to know what that feels like to hear it sung back to me.”

The hit song made waves over the summer after Calvin tweeted that Taylor, who had wanted to keep her identity and involvement under wraps, wrote the lyrics to the song with Rihanna and is credited with the pseudonym Nils Sjoberg.

The 26 year-old pop sensation revealed that the Austin show was her only 2016 show after spending much of the year prior on the world-spanning tour in support of the 1989 album.

Check out the video of Taylor smashing it, here!

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