I never picked up on “Nothing can stop us now” being woven into (virtually) every scene.
Also, when the factory changes Mickey says something along the lines of “We did it, watch this” but then after that I can’t understand what he says.
Mickey: We did it! Hahaha! Let's eat!
<Pluto barks twice>
Goofy: <chuckle> Well that concludes my guided tour...