Seriously, it seems to be almost a new genre. “These performances were rendered with a disarming, self-interrupting casualness, suggesting a happy ham at home among friends. And they often directly involved the audience. ‘Do you want it? Do you want it?’ [Kristin] Chenoweth shouted to the audience, before she hit a high D in concluding a song. [Ian] McKellen, in his show’s second act, asked theatergoers to yell out names of plays by Shakespeare, to cue whatever he did next.” – The New York Times