A few years back, as an undergraduate at UCLA, pop star Sara Bareilles was a member of Awaken A Cappella. She recorded an original tune with them called "Gravity," which wound up on the 2004 Best of College A Cappella compilation.
Years later, that same song—this time with instruments—made it to Sara's big studio album, Little Voice.
Two versions posted here. Is it strange that I prefer the a cappella version? Or just embarrassing? Decide for yourself here.