Rebecca Sugar and Olivia Olson sing "Everything Stays" at SDCC 2015

Check out Rebecca Sugar (Creator of Steven Universe, former writer and storyboard artist on Adventure Time) and Olivia Olson (voice of Marceline on Adventure Time) singing "Everything Stays" from an upcoming Adventure Time episode at the Adventure Time/Steven Universe Panel at SDCC 2015. I thought it was amazing. Check it out!