https://archive.org/details/harmonicsofarist00aris

https://archive.org/details/harmonicsofarist00aris

Start reading on pg. 165...

Skip 2,300 years of opinion and verbal transfer of information... here is the link to Music Theory from 300 B.C.E.

Counterpoint Links

https://en.wikipedia.org/wiki/Elementa_harmonica

http://www.opus28.co.uk/Fux_Gradus.pdf

Temperament: http://www.huygens-fokker.org/docs/Kroesbergen_Bach_Temperament.pdf

http://www.listeningarts.com/music/general_theory/species/cf.htm