The pair performed their highly-anticipated collaboration “Inside Our Hearts,” out July 25 via STMPD RCRDS
Split, Croatia - July 11, 2025: 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.
“In Our Hearts” captivated the festival’s packed out audience, as well as millions of fans around the world, who watched the performance via Ultra's cutting-edge #ULTRALIVE broadcast on UMF TV. Fans can continue to stream ULTRA Europe all weekend via UMF TV’s official YouTube channel.
Alesso and Martin Garrix have become mainstays amongst ULTRA Worldwide's international circuit of events, having headlined the Main Stages of Ultra Music Festival, ULTRA Europe, ULTRA South Africa, ULTRA Taiwan, ULTRA Japan, and more.