Boston Ballet’s resident choreographer, Jorma Elo, is notorious for not getting his dances done on time, but his stark, high-energy style has reenergized an often-troubled company. “In recent years, as Elo’s schedule has filled up with prestigious commissions, he’s become known for a particular contemporary spin on ballet… He won’t say what his pieces are meant to convey, or how his own calm demeanor offstage relates to the often frantic energy onstage.”