I was looking for one too-so if ya find one let me know.....I However I
do know aboout how to start to understand it.  If you are a musician than
you might understand this.  I usually sing a 3rd above the melodie.  BUt
sometimes that doesn't match.  If you don't understand that, than get a
musician to teach you........I am a horrible teacher!

Tiffany H