Well, it's possible that she did sing live (this is prerecorded) and the sound was of poor quality given the whole "face down in a bed" thing, so they decided to dub in vocals from a better performance (ie: the Ellen one) before it's air date. Or that they are hiding the real audio since she apparently hasn't had this performance air yet?

There's no getting around that most of that is from Ellen, though the last verse was live I guess since you can year her voice changing as she's fumbling around with Lena
The dancing was so embarrassing. I'm guessing Maddie canceled last minute, so they had to get ANYONE who was willing to just wing it last minute, and Lena agreed

When she tried to pull the toilet paper and it kept ripping

And when she was climbing up the bed and my only thought was "I hope they're not going over the weight limit

"
