The main princess who sings a two part harmony with a miscreant is Anna from Frozen.
Obviously miscreants aren’t so into singing minimal melodic numbers with the individuals they’re going to attempt to decimate — aside from Hans — he can’t remain quiet about that tune.
Dozing Beauty just has 18 lines in the entire film, the least of any princess.
That bodes well, seeing as she’s resting more often than not.
How might I get that gig?