Lightning strikes every time Taylor Swift moves.

And her June 14 show in Liverpool, England, was especially electric with the Eras Tour debut of 2016's "This Is What You Came For" by Rihanna and Calvin Harris, who Taylor was dating at the time she co-wrote the dance hit.

As seen in concert footage circulating on social media, the "Karma" singer told the crowd, "Every single time I have an acoustic set, I'm always trying to think of things you might want to hear—maybe things that might be a little bit unexpected."

Taylor added, "Let's see how we did tonight."

Needless to say, the audience went wild, erupting in cheers before joining her in song.

The 34-year-old has only performed the track twice since its release. She played a piano version of the song in October 2016—six months after its debut—at the Formula 1 U.S. Grand Prix in Austin, Texas. Nearly four months later, the Grammy winner performed it on an acoustic guitar during a Super Saturday Night concert in Houston. 

Initially, Taylor received songwriting credit for the single under the pseudonym Nils Sjöberg. But after she and Calvin, 40, broke up in June 2016 following almost a year-and-a-half of dating, E! News confirmed that the "Cruel Summer" artist was one of the masterminds behind the chart-topping track.

"I wrote under the name Nils Sjöberg because those are two of the most popular names of Swedish males," Taylor later explained of the alias in a 2020 Rolling Stone interview. "And nobody knew for a while. I remembered always hearing that when Prince wrote 'Manic Monday,' they didn't reveal it for a couple of months."

And Taylor kept the surprises going at her Eras Tour show in Liverpool, mashing up "This Is What You Came For" with her 2020 evermore track "Gold Rush." As part of the set, she also changed the lyrics to her 2022 Midnights tune "The Great War," replacing "we" and "I" when she sang, "I vowed not to cry anymore if we survived the great war."

But these concert moments are on numbered days. After all, Taylor recently announced that she'll be ending the her sold-out tour in December.

For now, keep reading to see all the celebs at the Eras Tour.

The "Dip It Low" singer and her teen daughter Violet were in a lavender haze at Taylor Swift's Paris show.

The Grey's Anatomy actress attended the Eras Tour in France in May 2024, captioning this pic with the Midnights lyric, "Cause we were in Paris."

"It’s fair to say Sydney always delivers," Rita Ora captioned Instagram photos from Taylor's Feb. 23 show, including a snap with Travis Kelce. "Or shall we say our TayTay @taylorswift always delivers!”

Taylor's dad Scott Swift delivered an epic photobomb.

"Got to see an old friend shine tonight," Katy Perry captioned footage on Instagram from the Feb. 23 concert.

The Blink-182 rocker—whose band was playing near Taylor's Sydney venue on the same day—and the Pitch Perfect alum hung out in the VIP tent.

The Oscar winner captioned the moment with friends in Mexico City, "Spamming u w really good @taylorswift Eras Tour content."

The Pretty Little Liars star attended with friends Morgan Pesante, Katie Greenthal and Claire Leahy. "Omg??? @taylorswift putting on a show that was so good I can't even process," she wrote. "Nostalgic, empowering, and sparkly."

The "Bad at Love" singer got in the spirit by making friendship bracelets to trade with fans during the last Los Angeles show.

"Still in the afterglow of the most magical night," the Law & Order: Special Victims Unit star wrote on Instagram Aug. 9 after a bejeweled night out in L.A. "Deepest gratitude to @taylorswift for your poetry and wisdom. You inspire us and connect us to our #delicate tenderness, joy, hope and strength—and most of all, our wish to live and love courageously."

Sharing pics from an L.A. show, Chris Olsen quoted the T.Swift lyrics in his caption, "I DON'T KNOW HOW IT GETS BETTER THAN THIS."

"Eras tour (Dylan's version)," the influencer captioned fits of her rocking a Stella McCartney outfit. "@taylorswift you are a goddess best night ever."

The Hills stars filled a blank space in their calendar with a date night in Los Angeles at the Eras Tour. Heidi Montag captioned their pics, "This was the concert of a lifetime! Legendary! Thank you for the tickets @taylorswift."

"@taylorswift with the fam," Jessica Alba wrote, "what a show!" She and husband Cash Warren celebrated their love story by taking their kids Honor, Haven and Hayes.

The Mad Max star danced to "Shake It off" with her kids August and Jackson. "Thank you for the best birthday ever @taylorswift!!!" she wrote. "We had such a great f--king time."

"What a SHOW," Paula Abdul wrote while posting for a photo with Vince Vaughn and Taylor's parents Scott and Andrea Swift in Los Angeles.

The Vanderpump Rules stars made their wildest dreams come true on the floor with Paula.

The "No One singer" attended the Aug. 5 show at SoFi Stadium in Los Angeles with her 8-year-old son Genesis.

The actress attended one of Swift's shows at SoFi Stadium in Los Angeles with Anastasia Beverly Hills cosmetics founder Anastasia Soare and her daughter, Claudia.

The late Kobe Bryant's wife Vanessa Bryant and their daughters Natalia Bryant, 20, Bianka Bryant, 6, and Capri Bryant, 4 attended Swift's show at SoFi Stadium in Los Angeles Aug. 3. While performing her song "22," the singer approached Bianka at the end of the stage, hugged her and gifted her a black hat she typically gives a fan during the number. The family later got to hang out with the pop star backstage.

The Hills alum was ready to be enchanted at the Aug. 4 show.

The New Girl star shared a family photo on TikTok ahead of the Aug. 4 show.

The duo snapped a selfie at SoFi Stadium on the first night of the Eras Tour in Los Angeles, with Elizabeth Banks writing of Taylor's performance, "She was an Angel and a Unicorn and Pure Magic."

Elizabeth took a pic of Sarah Paulson showing off her Eras Tour merch from the Casamigos suite.

"The first night of the LA Eras tour was everything!" Mindy Kaling wrote after the Aug. 3 show. "@haimtheband set the tone by destroying in their home town and then @taylorswift, well, did her bejeweled thing and 70,000 of us were like 'how can we know every single lyric to 5 hours of songs?'. There were no highlights. It was all highlight."

The couple headed to Night One of the tour in Los Angeles, with Becca captioning their look with the "Fearless" lyrics, "I know I wanna ask you to dance right there, in the middle of the parking lot."

Brie Larson shared a pic from her view of the show in Los Angeles.

Brie captured a video with fellow Marvel star Lupita Nyong'o.

The Hills alum was ready for it on Aug. 4 in L.A.

Kobe and Vanessa's 20-year-old daughter shared a hug with Taylor after the show.