There isn’t much in Chelsea’s video, because she’s approximately eleven years old. Not a lot of time to have a dark past. A Jonas Brother (Hank, I think) has nice things to say about her.
Dance number two is the Rumba. She’s dressed like a ghost prostitute at first. Once that nonsense is dealt with, it’s a really nice dance that does not look even a little bit like a Rumba to me. It’s weird, because there are all sorts of nice bits and some really beautiful poses, it never seems like it gets going. The whole time, I’m waiting for it to just explode, but it only ever meanders. But that’s probably just my expectations, rather than a failing of the dance.