Musical Cheers

A Midsummmer Night's Dream, except that the actors wear signs instead of costumes — Theseus, Demetrius, Hippolita, Lysander, Hermia, Helena, Titania, Oberon, et al. — which at intervals all the players exchange and continue uninterrupted in new roles regardless of age, gender, gravitas or suitability. Every player must study every role and deliver up each role–in–hand letter perfect & comedy optional.

If that doesn't work, consider the source of this odd remark.