Charli xcx was joined by a special guest star at a concert in Europe — none other than Chappell Roan! In a clip from Amazon Music's broadcast of Barcelona, Spain music festival Primavera Sound on Thursday, June 5, the "Pink Pony Club" musician, 27, can be seen appearing on the venue's screen to perform the dance to "Apple" — a choreographed dance number that incorporates a special guest star at each one of Charli xcx's performances. Roan, wearing a gray pleated skirt, a black shirt and a sweatshirt, can be seen putting on a pair of giant alien sunglasses before perfectly performing the moves to the track from Brat made famous on TikTok as she sings along to the song: "I think the apple’s rotten right to the core/ From all the things passed down/ From all the apples coming before." As Charli, 32, introduces the performer and tells the crowd to "Make some f---ing noise right now!" the audience can be heard cheering. After Roan finished her dance and shook her butt for the camera, the Brat musician thanked her for the guest appearance: "Chappell I f---ing love you bitch!" Roan is set to perform at the European music festival herself on Saturday, June 7. According to Amazon Music, the music service will be livestreaming each day of Primavera Sound exclusively via Twitch and Prime Video. "Fans can tune into their favorite artists’ sets—including all headliners—from the comfort of their homes for the rest of the weekend," Amazon Music said in a press release. "Livestream schedules will be available day-of!" Tons of other major artists are set to appear at Primavera before the festival ends on Sunday, June 8 — including Aminé, Beabadoobee, HAIM, Jamie xx, Judeline, Kim Deal, La Casa Azul, MJ Lenderman, Sabrina Carpenter, Stereolab, Waxahatchee and many more. Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer​​, from celebrity news to compelling human interest stories. Charli (real name Charlotte Aitchison) has had tons of celebrities and fans appear at her concerts to perform "Apple" after TikTok creator Kelley Heyer created a dance to the song that went viral on social media. "1 month ago I made a dance on a whim and now look at everyone dancing and along and having so much fun," Heyer wrote on TikTok in July in a video that has now been viewed more than 1 million times. The PEOPLE App is now available in the Apple App Store! Download it now for the most binge-worthy celeb content, exclusive video clips, astrology updates and more! Everyone from the Team USA Women's Rugby team to Brooke Shields and Kamala Harris took part in "Brat summer" last year. Charli herself also did the dance in a TikTok video at the time. Accompanied by her Sweat tourmate Troye Sivan and photographer Terrence O'Connor back in June 2024, she captioned the dance video: “epic choreo moment incoming on sweat tour !”