Yeah the whole lack of harmonizing astounded me as well. If you are a singing, harmonizing should be almost as natural as a la la la.
LnF, I think her name is Denosh.
The one who stands out to me in a good way is Dominique.
Diddy had Malika shook. She was sweating. I never noticed her aged appearance until this season but she is the same age as me and I can still pass for 25.

She can't unless a guy trying to mack.
Oh and when Aubrey first started singing Lady Marmelade, I almost had to drive to Home Depot to get an axe to hack my TV in half.