Answer
Yes, acclaimed Austrian composer Reynaldo Hahn and renowned French dramatist Sacha Guitry did indeed collaborate on several notable projects. Among their most recognized collaborations was the 1918 operetta "Mozart," a charming musical homage to the legendary composer Wolfgang Amadeus Mozart. Hahn's exquisite melodies and Guitry's witty libretto perfectly captured the elegance and spirit of the 18th century, making "Mozart" a cherished masterpiece in the operetta genre.