I think I finally figured out my problem with some of these.
It's her singing. It's good, but I just love it when she sings with a lot of power (Red, Starlight) and belts it out in her upper register. She's just kind of mumbling most of the songs. A couple of these are fine but I need her to throw some more of the power songs in there.
Also, I skipped the promo singles. It might blend together better if I didn't skip those.