The Light in the Piazza (musical)
The Light in the Piazza is a musical with music and lyrics by Adam Guettel, and a book by Craig Lucas. Based on the 1960 novella by Elizabeth Spencer, the show is set in the 1950s and tells the story of Margaret Johnson, a wealthy woman from the American South, and Clara, her daughter, who is developmentally disabled due to a childhood accident.
Source: Wikipedia — The Light in the Piazza (musical) (CC BY-SA 4.0)