What's airy as spun sugar and contains all the colors of the rainbow? That'd be the music of Marshmello, a mysterious producer who, hidden behind his white marshmallow mask—inspiring many fan theories about his identity—arrived in 2015 with the sweetest, fluffiest EDM imaginable. Marrying neon-streaked trance stabs to trunk-rattling trap beats, his music offers the perfect merger of melody, main-stage intensity, and emotional payoff. He's got range too: The blindingly bright "Find Me" juggles future house with Jersey club, while "Ritual" slows down to indulge in slinky tropical house bliss.