Sound can be an abstraction....Or a tool...
As Fourier analysis is an abstraction tool working in a linear way , out of the time domain of natural sounds where there is a a temporal duration order which define speech perception and all perception of sound in nature , which are highly non linear, as evolution train our body to perceive for survival...
Music and speech are concrete qualitative experience for a trained body...
https://physicsworld.com/a/human-hearing-is-highly-nonlinear/