School of Rock – The Musical’s Alex Brightman was the big man backstage at the Winter Garden Theatre even before he received his 2016 Tony nomination for Best Actor in a Musical—after all, most of his castmates are half his size. In this exclusive performance video, Brightman’s kid co-stars pick up toy instruments (Fender and Gibson have nothing on Teenage Mutant Ninja Turtles guitars!) and Brightman takes lead vocals to tear it up with “Teacher’s Pet,” one of the show’s rousing Andrew Lloyd Webber/Glenn Slater anthems.