Task: Explanation
Input (English): Once on This Island is a one-act musical with a book and lyrics by Lynn Ahrens and music by Stephen Flaherty. Based on the 1985 novel "My Love, My Love; or, The Peasant Girl" by Rosa Guy, it is set in the French Antilles archipelago in the Caribbean Sea. The show includes elements of the "Romeo and Juliet" story and elements of the Hans Christian Andersen fairy tale "The Little Mermaid". It concerns a peasant girl on a tropical island, who uses the power of love to bring together people of different social classes. Question: Natalie Venetia Belcon born in 1969 appeared in which musical based on Rosa Guy's 1985 novel set in the French Antilles archipelago? Answer: Once on This Island
Output (English):  Based on the 1985 novel My Love, My Love; or, The Peasant Girl by Rosa Guy, it is set in the French Antilles archipelago in the Caribbean Sea.