Little Darling, that smile's about to return to your face.

We were so excited to hear that Demi Lovato's Glee guest role would involve a love story with Naya Rivera's character Santana that we almost forgot she'd also be singing. Lovato's "Dani" will make her debut on October 4th in part two of Glee's Beatles themed episode. Here comes the duet:

"Here Comes The Sun" is a "cheer up" song, so we're guessing—and our guesses are famously dead on—Dani is feeling down about Breaking Bad being over, and Santana lent her a shoulder to cry on. We know that Breaking Bad isn't on FOX, but that just has to be it.

We'll be tuning in to find out. Will you?