Spot on McGrath.
The assumption that there are twelve ET semitones, that are sort of out there and human cultures are limited to these for musical purposes is nonsense.
As for consonance, the most consonant intervals are the ones with the lowest numbers in their frequency ratios, the most consonant being 2/1 the octave.
I can certainly tune a 9/8 Major second interval, and these are used as harmonies in Eastern European vocal music.
Also the 7/4 Harmonic seventh interval is used in Barber Shop harmony.
8/7(7/4 up), 15/8 and 16/15, are used against tonic drones in many cultures.
It's hardly surprising that the same physics applies to musical instruments and the human sound making apparatus.
I think hearing at a very primitive level (in the sea) probably evolved first but sound generating must have come along almost immediately, and then the two systems co-evolved.
The ear assumes sounds are generated by oscillating systems that produce integer multiple frequency harmonic series, and is evolved to detect these.
The more interesting question is how these intervals are used to create a psychological dynamic and convey emotional meaning.

All the best PP