A Little Night Music is a musical with music and lyrics by Stephen Sondheim and book by Hugh Wheeler. Inspired by the 1955 Ingmar Bergman film Smiles of a Summer Night, it involves the romantic lives of several couples. Its title is a literal English translation of the German name for Mozart's Serenade No. 13, K. 525, Eine kleine Nachtmusik. The musical includes the popular song "Send In the Clowns", written for Glynis Johns.

Stephen Joshua Sondheim was an American composer and lyricist. Regarded as one of the most important figures in 20th-century musical theater, he is credited with reinventing the American musical. With his frequent collaborators Harold Prince and James Lapine, Sondheim's Broadway musicals tackled unexpected themes that ranged beyond the genre's traditional subjects, while addressing darker elements of the human experience. His music and lyrics were tinged with complexity, sophistication, and ambivalence about various aspects of life.