In summary, the difference between music and noise is subjective.
Music and noise are simply words that categorize sounds based on how we feel about them.
My first thought: Music is sound we deem valuable.
Functional definition: Music is art in the medium of sound.
Any scientific definition of sound.
All things that can be heard.
Wiggly air.
A new one: Sound is proof of something. Sound is life; movement; existence.
As logic would follow: Noise is sound we deem unvaluable.