I find a tiny difference at the very end between the midi Q linked to and Mills-Baillargeon's rendition. They sing "un enfant de sept ans" with a dotted 1/8 note on "de" then a 1/16 on "sept" while the midi can only be sung as "un enfant d' sept ans" making "d' sept" only one syllable on a 1/8 note. This is why I first wondered -I'd listened to the midi somewhere before I came across Mills-Baillargeon's rendition- why the lyrics went "un enfant de sept ans" while all the mute e's had been elided.