The music was written by Jule Styne, adapted from Felix Mendelssohn’s Op. 62 No. 6, Allegretto grazioso in A major (Frühlingslied, or Spring Song) in Book 5 of Lieder ohne Worte (Songs Without Words), with the lyrics by Frank Loesser.
#Andantino - Allegretto in D major (the subdominant of the work's main key), a theme and variations on Schubert's Lied Die Forelle.