the girls have been practicing at school for "da spwing pwogwam."

this is their new favorite song to sing but i cant ever figure out what they're saying in the third line. the song goes:
the birds up in the treetops sing their song
the angels in the chorus all day long
the flowers in the garden
something something hue?
so why shouldn't i
why shouldn't i
praise Him too?

btw they are in speech therapy fyi thank you very much.