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Students' Matilda song performed on a West End stage

11 June 2013 Last updated at 21:07 BST

Two young composers from Cheltenham have seen their song performed on a West End stage.

Isobel Connolly and Johannah Harris, who are students at Pates Grammar School, won a competition to write music based on the story of Matilda The Musical.

Their prize was to see it performed by the cast in London.