With this year’s Grammy-nominated Weathervanes, he proved once again that he’s among the greatest singer-songwriters of his generation—and in Martin Scorsese’s 'Killers of the Flower Moon,' which hits streaming services this week, he held his own as an actor alongside Leo and De Niro. So what’s it like for a guitar player from North Alabama to jump into the deep end of film acting with this many living legends? “I was terrified,” Isbell says, “but that was the best part.”