Original sentence: The musical premiered in London on July 27, 1970 at the Roundhouse Theatre and transferred to the West End Royalty Theatre on September 30, 1970 through January 27, 1974, and then transferred to the Duchess Theatre on January 28, 1974
Edited sentence: The musical premiered in London on July 27, 1970 at the Roundhouse Theatre and transferred to the West End Royalty Theatre on September 30, 1970 through January 27, 1974, The show then transferred to the Duchess Theatre on January 28, 1974, where it ran until 1980 for a total of 3,918 performances