NEW YORK — Avicii, the groundbreaking Swedish DJ-producer, died six years ago. It was a tragedy that reverberated around the world — much like his music, which brought unexpected genres and collaborators into his melodic EDM through forward-thinking, chart-topping hits like “Wake Me Up!” and “Hey Brother.” Q&A: Avicii documentary director on celebrating the late, 'timeless' DJ without exploiting his …
