Mexican superstar Juan Gabriel dies at 66

Mexican superstar Juan Gabriel died of a massive heart attack in Los Angeles on Sunday (Aug. 28), sources confirm to Billboard. The singer had launched the biggest tour of his career on Aug. 19.

Juan Gabriel ranked at No. 18 onBillboard’s 2015 Money Makers list (just below Ed Sheeran and just above Florida Georgia Line), largely thanks to $11.6 million in touring revenue in 2015. He scored the year’s highest-grossing Latin tour and had the top-selling Latin album,Los Duo, which has moved 131,000 units, according to Nielsen Music.