Le Rossignol or the Nightingale is originally a vocalise for Soprano solo from Saint-Saën's incidental orchestral music for the play, Parysatis written in 1902. This 4 minute work is all about mood.

For this arrangement, Mr. Sauer transposes into the key of C, which lays perfectly for all of the bird-like calls that are in phrases which are slurred. The music has a lot of ad lib. tempo sections which gives the performer plenty of time to create that magic call of the Nightingale. Early writers thought it was the female that sang, but in fact it is the male. The Nightingale usually sings at night or just before dawn when other birds are silent and has a strong spontaneous song with an impressive range of trills and whistles.