Source of Excerpts in Moyse's Tone Development

[Vancoeuvre]

I have started to try to identify the source of the melodies in Tone Development Through Interpretation. I think it's really helpful and inspirational to hear the melodies in their original form, whether they are arias or instrumental passages. Some are easy to source like "The Swan," "Meditation," "Ave Maria," but I'd love to know if anyone knows the names of any of the arias that are transcribed. I'll start: Number 27 is "Printemps qui Commence"; Number 54 is "Ah Fors'e Lui"; Number 73 is "Casta Diva." Any feedback would be great.