Los Angeles - Taylor Swift performed the song she wrote for ex-boyfriend Calvin Harris at her only full concert on 2016 on Saturday.
The 26-year-old singer took to the stage at the Formula 1 United States Grand Prix and as well as playing her biggest hits for the 80 000-strong crowd, she also treated the audience at the Super Stage area in Del Valle, Texas, to a piano-led rendition of This Is What You Came For, which was a chart-topping hit for the DJ in collaboration with Rihanna earlier this year.
Watch her performance here:
Best quality video of Taylor singing TIWYCF last night!! pic.twitter.com/NZjGuTfOwc
— Taylor Swift Updates (@The1989Tour) October 23, 2016
This Is What You Came For at #F1!! #TaylorSwiftOnUSGP #TaylorSwiftAtF1 #TIWYCF pic.twitter.com/MyqfvkVj4I
— Taylor Swift News (@TSwiftDailyNews) October 23, 2016
The track sparked a row between Taylor and Calvin after they split in May, as weeks later it was rumoured the Shake It Off hitmaker was the person behind songwriter pseudonym Nils Sjoberg.
And after representatives for the singer - who struck up a romance with Tom Hiddleston after splitting from the Scottish DJ, though they have now split - confirmed her involvement, Calvin took to Twitter to slam her for trying to "tear [him] down".
Calvin brought Rihanna in to record the vocals on the song as he and Taylor - who dated for 15 months - feared their relationship would overshadow the track if they released it together.
However, they split in May and the so-called "breaking point" in their romance reportedly came after he was ''disrespectful'' by saying he'd never work with her while promoting the track.
See more pics of Taylor's performance here:
(Photos: AP)