My absolute favorite of the many fabulous pieces of Discworld opera poster art appearing on the…

My absolute favorite of the many fabulous pieces of Discworld opera poster art appearing on the corridor walls at the International Discworld Convention this past weekend. (ETA for @serkershit : Please tell David that the art initially STOPPED ME DEAD in the hall between the Triumph bar and the back side of things, and all I could do was stand there hanging my face open and then go &ldquo;WOW THAT…