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Take the Octave Equivalence challenge

🔗harold_fortuin <harold@...>

2/16/2006 11:43:39 AM

A posting about the minor ninth on the tuning forum got me thinking
about related concepts/problems like octave equivalence again.

Here's the Octave Equivalence challenge:
Visit
http://www.geocities.com/harold_fortuin/HFCompos.html
and find "Prokofiev Marches Out of the Grave" and
listen to it and view the score excerpt (sorry, but it's in 12-ET)

What is the chord ending the first phrase?
Is it a believable tonic chord?
Would it be equally believable if all its pitches were tranposed to
within 1 octave?

Octave-Equivocally yours,
Harold

🔗Jon Szanto <jszanto@...>

2/16/2006 12:07:19 PM

Harold,

Fine little piece-let!

{you wrote...}
>Is it a believable tonic chord?

People will believe anything these days. :)

>Would it be equally believable if all its pitches were tranposed to within 1 octave?

Bass drums in the concert hall are usually tuned very low, so any tonal areas don't interact negatively with the music being performed (as opposed to the timpani, which while low in pitch *are* in a suitable range of hearing, and are scrupulously tuned); however, on dry days those calf-skin heads can start creeping upwards, and all of a sudden you can find yourself with a competing bass note - not a good thing.

Yep, the C's are low (and pass by so quickly) that one hardly notices anything but the low-end thump; pop them up an octave or two and you'd have a pretty wonky tonic chord...

Cheers,
Jon