One of our research approach starts with the notion that language evolved as a subset of music. So first was music, then language. A notion that already Heiner Müller expressed when he said that it’s not the singing that starts when words end, but exactly the opposite.

Some backup of this theory from cognitive science: https://www.psychologytoday.com/us/blog/your-musical-self/201209/which-came-first-music-or-language