patter singing: The act of including a mix of dialogue within a song.
picture frame stage: Modern stages that are rectangular in styl with a front area that separates the audience from the actors.
point of attack: The beginning of a play as determined by the script writer.
proscenium: The curtain line of the stage or the decorative framing of the stage.
protagonist: A play's central character who is the focus of the script.
repertory theater: A group that retains the same performers and other critical personnel to present all types of plays for short runs.
reprise: The repeat of a song within a musical that may be performed by the same or a different actor and sung with another interpretation of pace and tone.
revolving stage: A mechanized stage that can turn to reveal two different scenes and a change of locale without stopping the play for intermission.
revue: A musical performance that is typically a conglomeration of composers with a common thread in the songs and often accompanied by dancing.
showstopper: The crescendo song that is so impressive the performance has to cease momentarily while the audience applauds and cheers in excessive excitement.
SRO (standing room only): A sold-out performance with designated room remaining for standing and watching.
stage left/stage right: The side portion of the stage from the performer's perspective; for spectators, it's the opposite.
standby: A performer who does not have any role in the play but is trained in multiple roles and ready to perform should an emergency arise.