The story, such as it is, follows the three sisters, who are imprisoned by their father in a basement to practice their lacking musical skills. Periodically, the screen instructs them to perform calisthenics, which they do with impressive energy and sweat.

Their father arranges for them to perform at a concert in the town of Fremont, where the audience (us) are given cans of Coke to express appreciation, or lack thereof, by throwing them at the stage.

As the acts progress, the show becomes increasingly anarchic. The actor playing the stage manager is repeatedly beaten up and stripped of his tool belt. Later, he loses three T-shirts to the cast and may not survive the ordeal.

Act Three brings the chaos to a climax. Yes, they do take their tops off. A loud drum kit is assembled and played, one performer delivers a screaming philosophical diatribe about the shooting of Andy Warhol, and another writes indecipherable truths on blackboards in what becomes a surreal lecture hall.

This is a show that puts many others to shame with its bold experimental comedy and relentless energy. The audience loved it: exactly the kind of daring work Summerhall is known for.  Theatrevibe the site that doesn’t do stars, awards Philosophy of the World, Five Fringe Festival (FFS) anarchic stars.