The Arcadians is an Edwardian musical comedy styled a "Fantastic Musical Play" in three acts with a book by Mark Ambient and Alexander M. Thompson, lyrics by Arthur Wimperis, and music by Lionel Monckton and Howard Talbot. The story concerns some idyllic Arcadians who wish to transform wicked London to a land of truth and simplicity.
First produced by Robert Courtneidge, the musical opened at the Shaftesbury Theatre in London, on 29 April 1909, and ran for 809 performances. This was the third longest run for any musical theatre piece up to that time. The production starred Phyllis Dare, Dan Rolyat and Florence Smithson. A Broadway production opened in 1910 and ran for 193 performances. The piece was toured extensively, revived professionally in Britain, and a silent film version was made in 1927. It was popular with amateur theatre groups, particularly in Britain, throughout the 20th century. Recordings of some of its numbers were made in 1909 and 1915 by original members of the London cast, and more substantial excerpts and one complete performance have been released on compact disc.
The work is regarded by theatre historians as the finest example of its genre, with Monckton's melodic talent supported by Talbot's technical skill. The score contains elements characteristic of the Savoy Operas of the previous generation as well as broader numbers reminiscent of the music hall.