"Moonglow" is a jazz standard composed by Will Hudson with lyrics by Eddie DeLange, published in 1933. Irving Mills, who served as the songwriters' publisher and manager, is also credited as co-composer, following a common industry practice of the era. Hudson originally wrote the piece as an instrumental theme song for his band at the Graystone Ballroom in Detroit, and DeLange added lyrics afterward. The melody draws some inspiration from Duke Ellington's "Lazy Rhapsody," though it stands as an original composition rather than a contrafact. Its A-section melody is built on a repeating riff centered around a minor third interval, creating a gentle, nocturnal quality that suits its romantic lyrical subject. The harmony moves through an ascending circle of fourths with chromatic substitutions, producing an elegant harmonic cycle that invites extended improvisation. Joe Venuti and his Orchestra recorded the first instrumental version in 1933, followed by Cab Calloway's vocal recording later that year. Benny Goodman's 1934 recording reached number one on the pop charts, firmly establishing the tune in the swing era repertoire. The song experienced a second wave of popularity in the 1950s when it was paired with George Duning's "Theme from Picnic" in a medley featured in the 1955 film Picnic. Other notable interpreters include Duke Ellington, Art Tatum, Ethel Waters, and Artie Shaw, reflecting the tune's broad appeal across vocal and instrumental settings throughout the jazz tradition.
