Alesso Surprises Fans with Martin Garrix Collaboration During ULTRA Europe 2025 Headlining Set

GRAMMY award-winning artist Alesso ignited ULTRA Europe’s Main Stage when he brought out surprise special guest Martin Garrix to perform their highly-anticipated single “Inside Our Hearts,” set for official release on Friday, July 25 via STPMD RCRDS.

As Alesso’s set neared its finale, he welcomed Martin Garrix to the stage, and the pair of dance music titans delivered a slew of festival anthems: firing off a galvanizing edit of Sebastian Ingrosso and Tommy Trash’s “Reload,” followed by a high-octane mashup of Garrix’s chart-topping hit “Scared To Be Lonely” with Dua Lipa, and Alesso’s iconic collaboration with Ingrosso, “Calling (Lose My Mind).”

In a heartfelt moment, Alesso addressed the crowd, sharing, “We’ve been working on this song for two years, and think we finally finished it!” The duo then launched into the uplifting lyrics of “Inside Our Hearts,” a track that has already achieved cult status among fans after being teased during Garrix’s 2023 Ultra Music Festival set. Alesso and Garrix’s joint performance of “Inside Our Hearts” at ULTRA Europe fueled even more excitement about the record, which marks the first-ever collaboration between the pair of powerhouse producers.