In 1988, Leonard Bernstein started working on a new version of his much-revised operetta "Candide". The author of the original book, Hugh Wheeler, had died, and John Wells was asked to help revise the text. The first production of this "final version", by Scottish Opera, was followed by a "final revised version" in 1989, performances of which have been released on CD and DVD. An insert in the DVD ("Bernstein and Voltaire"), written by Wells, explained what Bernstein had wanted in this final revised version.