15 Famous Musicians Who Wrote Massive Hit Songs At Freakishly Young Ages

The chorus was originally meant to be a backing vocal part for another song, but it didn’t quite fit. It was very catchy, though, and as Isaac told Songwriter Magazine, he didn’t forget it. “I was definitely the one who kept bringing up the idea: ‘Hey, remember that idea? That was really cool.’”

A couple of years later, an older and wiser 13-year-old Taylor wrote the song’s first verse. The three brothers then completed the rest of the song together.

Isaac added, “When we did the final version, it was very clear that it was very catchy and really stuck out as an idea and melody that was going to stick in people’s heads. It stuck in our heads, so it’s reasonable to think it would stick in other people’s heads too.”