MANHATTAN (CN) - Mitch Leigh and Helen Darion - the widow of Joe Darion, who with Leigh wrote the tunes for "Man of La Mancha" - demand $10 million from their former agent, Tonda Martin and The Marton Agency. They claim that after they dismissed Marton in 2008, they found that she had favored the interests of Dale Wasserman, who wrote the book for the play.
Tonda Martin also operates as The Elisabeth Marton Agency, according to the complaint in New York County Court.
Leigh and Darion's greatest hit from "Man of La Mancha," which is loosely based on Miguel de Cervantes' "Don Quixote," is "The Impossible Dream."
The plaintiffs are represented by Robert Lillenstein with Moses and Singer.
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