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The first performance was at the Royal Opera House, Covent Garden on 26 April 1951.
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The opera contains 41 individual singing roles. Herbert Murrill has characterised the opera as "summarizing in three hours virtually the whole creative output of a great composer". The BBC commissioned Vaughan Williams for incidental music for a 1942 radio dramatisation of The Pilgrim's Progress. Valiant-for-Truth's speech for mixed chorus. 5 also made use of themes originally conceived for his John Bunyan project. For example, his earlier one-act opera The Shepherds of the Delectable Mountains from 1921 was incorporated into Act 4, Scene 2 of the later opera. The musical gestation of this opera was protracted, and was reflected in a number of musical projects in Vaughan Williams' life. His changes to the story included altering the name of the central character from 'Christian' to 'Pilgrim', so as to universalise the spiritual message. Vaughan Williams himself prepared the libretto, with interpolations from the Bible and also text from his second wife, Ursula Wood. Nonetheless, he intended the work to be performed on stage, rather than in a church or cathedral. The composer himself described the work as a 'Morality' rather than an opera. The Pilgrim's Progress is an opera by Ralph Vaughan Williams, based on John Bunyan's 1678 allegory The Pilgrim's Progress.