[link to original on tumblr]
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After eight measures of Bb notes in alternating octaves, there's a section in the verses that descends diatonically, skipping octaves after every pair of notes and then going back to single note octave-skipping:
I'm not sure if it's intended as a sort of reference or homage to it, but Bach's Orchestral Suite No. 3 in D major, BWV 1068 has this same feature in the second movement (the Air):
(notation found here)
I've found that same feature in some other pieces too (like Grieg's Holberg Suite, Op. 40), but because I first encountered it in that Bach piece, that's what I thought of first.