[My favorite is Mesple's since she doesn't seem to be trying so hard to hit those notes.]
Ms. Grayson appears in part 2 at 5:42.
Kathryn Grayson's part was taken from a dream sequence in the movie It Happened In Brooklyn (1947). You can see her rendition in its entirety here: The Bell Song (Où va la jeune Indoue?) - Kathryn Grayson