The Repertory reference article from the English Wikipedia on 24-Apr-2004
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Repertory

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Properly, repertory is a style of a number of repertory companies which rehearsed and performed plays in a fortnight. Originally a British idea, these were professionals but due to time restraints and commercial restraints they played like amateurs. The largest repertory theatre company was and still is in Liverpool.

There was a form of touring repertory called fit-up which involved carting round the set for about five different plays. The plays were shown on consecutive nights.

Nowadays repertories perform just once or twice a year.

The term is used in the theatre to refer to any number of two or more plays which are rotated within a season, usually alternating with different plays every night for a period of time. Plays are rehearsed at all once or in rapid succession, and often feature the same actors or company in several plays.

see also: Summer stock

Fringe and Community Theatre (UK) are, though mostly unpaid, similar to Fringe.