In 2004, when he was just eight years old, Martijn Garritsen saw Tiësto performing at the Olympics on TV and thought, "I could do that." Ten years later, the young producer—now known as Martin Garrix, and with a string of game-changing EDM hits to his name—was signed to Scooter Braun's agency. He's since put out records on Tiësto's Musical Freedom label and collaborated with the trance icon.