From Lebanon to Sweden to England to Indonesia to Turkey (President Erdoğan is a fan), 36-year-old Maher Zain draws enormous, cheering crowds and 100 million YouTube views every month. All this with music that’s as wholesome, in its Muslim way, as Donny Osmond or Amy Grant. “I don’t want to live this life, basically. I really don’t,” he says. “I believe I’m on a mission and you cannot turn it down, you know what I mean? I’ve been chosen.”