Inconsistency

I keep meaning to mention this, but I only remember it when I hear the song, and only today did that happen soon enough before I got to work that I remembered it.

Rufus Wainwright sings "Hallelujah" (of course he does, who hasn't? I'm starting to agree with the critic who wrote, Why yes, I too have heard that there was a secret chord David played and I'd just as soon not hear about it again thank you), and in it he consistently loses the rhyme, insisting on singing "do you" and "overthrew you" and "knew you" and "outdrew you" with a full OOOOO in the "you" (/u:/) instead a reduced "yuh" (/ə/) to rhyme with "Hallelujah".

It bugged me when I first heard it, but finally decided that Rufus just doesn't have that in his vocabulary, and I got used to it.

But.

In "Cigarettes and Chocolate Milk" he quite happily rhymes "see you" with "Pisa".