Okay, I may be crazy, but listen closely to the harmony vocals in this song, especially around 0:19 and 1:18. Is it just me, or does that sound like Jason Ritter (aka Dipper)?
I have no idea if that’s actually Jason. It would be super cool if Disney managed to get Jason to come back and sing this song with Kristen Schaal, but I’m more interested in how this worked out in the Gravity Falls universe. The image of Mabel forcing Dipper, who does NOT like to sing in front of people, to record background vocals for her love song is not only hilarious but is also a super Mabel thing to do. I can envision that happening in an actual episode of Gravity Falls. So, even if that isn’t Jason Ritter, I’m gonna imagine that it is Dipper singing those background parts. Just to fill the Gravity Falls-shaped hole in my heart.