Question: Which person who contributed to the classic story of the same name by Hans Christian Andersen is an American musical theatre and film score composer and pianist?
Sentence (from "The World of Hans Christian Andersen"): The World of Hans Christian Andersen (アンデルセン物語 , Andersen Monogatari ) is a 1968 Japanese animated family fantasy film from Toei Doga, based on the works of Danish author Hans Christian Andersen.
Relevant evidence: No