Hello,
my name is Peter and I am currently studying Arnold Schoenberg's Theory of Harmony and I've come across a bit of confusion which hopefully you may help me out with.
At the moment I am working on chord transitions exercises using old voice leading rules that basically forbid the use of parallel fifths and octaves when using parallel motion between two voices. I understand that reasonably well however Schoenberg also mentions doubling of the third in this passage ...
"In some cases he will discover parallel octaves and fifths and must discover how to evade them. In some others it will be necessary to dispense, in part, with the sustaining of common tones because otherwise the superfluous doubling of the third would result." (page 71 in the Inversions:Connections of Chords section).
I'm pretty sure hes talking about sustaining two voices that are a interval of a third apart during a chord transition.
My question is when he mentions doubled thirds, is he only concerned about the third interval between the root and the third or would the interval between the third and the fifth also be considered since that is technically a third interval as well.
This might all sound confusing to someone who hasn't read the book and my explanation probably is not that clear in the first place but if anyone can help me out I would really appreciate it. And I can clear up any confusion that might arise.
One thing I was also curious about was this whole idea of sustaining thirds in chord transitions and wondering why it used to be considered bad practice in the first place.
Thanks for reading this and hopefully I'll hear from you soon.