This topic is really deep.
Sound become music when it reach a higher level, just like when words becomes poetry.
You should check out "The unanswered question" by Harvard Professor Leonard Bernstein. You can find episode 2-6 on youtube but number one is muted for whatever reason and you would need to get it from piratebay or somewhere else...
It's 6 lectures about what music is and he draws parallels to language and how music and poetry is on the same level.
Here is lecture 2 on youtube: https://www.youtube.com/watch?v=r_fx...=RDU3HLqCHO08s