For 10 points, name this Italian playwright of Six Characters in Search of an Author.
In one of this author's plays, the audience receives a handbill upon entering the theater that states the number of acts cannot be specified because of potential incidents that may arise during its performance. In addition to Each in His Own Way, he wrote a play about a man who claims to be a Holy Roman Emperor after falling off his horse on the way to a ball, Henry IV. In one of his plays, a rehearsal of Mixing it Up is interrupted by the Father, the Mother, the Stepdaughter, the Son, and the Boy. For 10 points, name this Italian playwright of Six Characters in Search of an Author.
In one of this author's plays, the audience receives a handbill upon entering the theater that states the number of acts cannot be specified because of potential incidents that may arise during its performance.
Luigi {Pirandello}