Taylor Swift Owns 'This is What You Came For' During Concert

10/23/2016 7:20 AM PDT

Taylor Swift Owns 'This is What You Came For' During Concert

Taylor Swift did something she's never, ever ever done before ... sang "This is What You Came For" live.

Taylor was performing at the Formula 1 U.S. Grand Prix in Austin Saturday night, when she rolled out the song that triggered a war between her and ex-BF Calvin Harris.

Nils Sjoberg joined her for the performance.