Alter Egos: Oliver Heldens vs. HI-LO

Oliver Heldens is equally at home on festival main stages as he is in the darkest of basements. The tunes put out under the Dutch producer's own name aim for the bleachers: Jubilant tracks like "Melody" and "Wombass" are buoyant, supersized EDM anthems. But his HI-LO cuts—like "Ooh La La" and "Crank It Up"—burrow deep underground, testing subwoofers with breakbeats and deep-diving basslines.