Duet Acting  is an event in competitive high school forensics. Duet Acting involves two people and two chairs; the furniture is supplied in each room of competition. Time limits vary, but generally each acting pair performs an eight- to twelve-minute scene, typically using only two characters. Occasionally the performers change roles, in the manner of Dramatic or Humorous Interpretation. The pieces may be either serious or funny, and the extensive use of movement is permitted (i.e., interaction between both characters, as well as with the chairs).