an Entity references as follows:
The West Side Waltz is a play by Ernest Thompson. The play focuses on Margaret Mary Elderdice, an aging, widowed pianist living in a dreary Upper West Side apartment, and her relationships with a prim, virginal violinist neighbor and the young companion who moves in for an extended stay. Thompson was prompted to write the piece when screenwriter George Seaton offered him a grant to write a new play following the success of his previous work, On Golden Pond.