Imagine if you could follow the journey of Billie Eilish’s “Bad Guy” from start to finish. You might be surprised to learn that a certain riff or lyric almost didn’t make the cut. The truth is, every song we stream or hear on the radio has gone through several demo versions before release. And this is exactly what music collaboration app Bounce wants you to discover, in hopes of artists collaborating better—and eventually, changing the way people consume music.