 A few on-lookers seem bemused, turning away, while others are clearly caught up in the humor of the piece.Humor is an essential part of many of Summers' performances, albeit the humor of a zen koan, or of the impassive presence of Charlie Chaplin or Buster Keaton.A broader sense of humor, however, is evident in Summers' audio drama, where change of voice, sound effects and unlikely twists of plot clearly show the artist's debt to The Goon Show and Monty Python.