Sketch comedy comprises a series of short
comedy scenes or vignettes, called "sketches", commonly between one and ten minutes long. Such sketches are performed by a group of comic actors or comedians, either on stage or through an audio and/or visual medium such as radio and
television. Often sketches are first improvised by the actors and written down based on the outcome of these
improv sessions; however, such improvisation is not necessarily involved in sketch comedy.