U2 and Dutch DJ-producer Martin Garrix have officially released their new collaboration, 'Fireflies'. Speaking about the collaboration, Garrix told NME: "There's always a sense of adventure whenever we get together. Every time Bono and Edge walk into the studio, I know something magical is about to happen." 'Fireflies' marks the latest chapter in the long-running creative relationship between Garrix and U2. AdvertisementThe release follows U2’s recent unveiling of ‘Street Of Dreams’, the lead single from their forthcoming studio album and their first collection of new material since 2017’s Songs Of Experience.