Not I: Lisa Dwan explains Beckett's play backstage
In a pitch-black space, a disembodied female mouth floats eight feet above the stage lit by a single beam of light and speaks "at the speed of thought".
Samuel Beckett's play, Not I, was first performed by Jessica Tandy in New York in 1972 the dramatic monologue lasted about 22 minutes.
Now Lisa Dwan can do it in nine minutes - the quickest it has ever been performed.
Dwan showed BBC News what the play is like backstage at the University of Reading.
Video journalist: Rachel Curtis