93

An excellent blog on this: http://nichtdiesetone.blogspot.com/2009/12/intervals-and-astrology_07.html

A person of interest:

http://en.wikipedia.org/wiki/Corinne_Heline

The original article: http://www.dovesong.com/positive_music/archives/basement/twentyfirst(4).asp

Many thanks to Don Robertson, the images belong to him.

http://wfae.proscenia.net/library/articles/levant_Language.pdf

An excellent article by Yvie Levant