All eyes are on the Ultra Music Festival Mainstage after Martin Garrix and Alesso teased a potential B2B set for Ultra Music Festival 2026.

Ultra Music Festival 2026’s Phase 1 lineup already landed with an explosive collection of world-exclusive B2B sets, but now all eyes are on the Mainstage as Martin Garrix and Alesso have sparked a massive rumor mill, teasing a potential joint set at Bayfront Park next March!

The speculation began when the official Ultra Music Festival Instagram account shared a nostalgic throwback story featuring a video of both Martin Garrix and Alesso on stage together during a previous spontaneous set. The temperature soared when Alesso reposted the image to his own story, adding a cryptic thinking face emoji (), a move quickly mirrored by Martin Garrix‘s official account.

Fans immediately connected the dots, viewing the exchange as a clear hint at a joint appearance for Ultra‘s 26th edition (March 27–29, 2026). Given Ultra‘s commitment to delivering “Ultra-exclusive” sets, as seen with the confirmed Sebastian Ingrosso B2B Steve Angello performance, a Garrix B2B Alesso set would perfectly align with the festival’s ambitious new direction.

While an official back2back set is yet to be confirmed, the two superstar DJs have a history of surprise appearances, including an impromptu B2B at Tomorrowland 2023. Their first official collaboration, the long-awaited progressive house anthem ‘Inside Our Hearts’, was also a major moment in their recent history, suggesting their creative partnership is thriving.

With Martin Garrix often closing out Ultra‘s final night and Alesso being a perennial fan-favorite, an official B2B slot would be a monumental capstone to what is already shaping up to be one of Ultra‘s most historic lineups.

Ultra‘s Phase 1 already boasts Mainstage heavyweights like John Summit, DJ Snake, Hardwell, and Armin van Buuren. The addition of a Martin Garrix B2B Alesso set would not only satisfy the intense fan demand but solidify Ultra 2026 as the essential cultural summit for electronic dance music.