Shrek the Musical theatre review: A swamp-sational show based on the much-loved film. Shrek the Musical theatre review by Katey Thompson. Shrek the Musical is based on the well know film of Shrek, which was originally a book written by William Steig. The show brilliantly recreates many scenes from film as well as creating some … Continue reading Theatre Review: ‘Shrek The Musical’ (UK Tour)