Gus, whose full name is Asparagus, is also a character in Andrew Lloyd Webber's musical adaption of the book, Cats.
He is writing a musical adaption to The Bridges of Madison County with Marsha Norman.
In 1979, she starred as the Queen in the musical adaption of the 1937 animated film Snow White and the Seven Dwarfs.
On January 28, 2013, Tina Fey confirmed that a musical adaption of Mean Girls is in the works.
William Davenant produced The Tempest in the same year, which was the first musical adaption of a Shakespeare play (composed by Locke and Johnson).
In February 2010, he was announced to write the book for the musical adaption of the novel American Psycho.
His last stage appearance was as Mr. Brown in the musical adaption of James Joyce's The Dead in 2000.
In the musical adaption Wicked, he is only mentioned briefly when Glinda mistakenly calls him "Dodo".
Her most widely applauded creation appeared halfway through the first act of "Triumph of Love," a musical adaption of the French play by Marivaux.