Adventures In Just Intonation – FM over Edim7

The high brass enter with a concert F Major chord. The low brass follows with an Edim7. The question that I pose is:

Given that the F Major chord is established first and is sustained to the release,
How would you tune FM/Edim7?

Would you tune it as two separate chords or one large chord?

Below is a diagram showing the information of the FM/Edim7.


Edim7 (E=0) and FM (F=0)
[player track=”http://bradkerrgreen.com/wp-content/uploads/2011/03/FMoverEdim7-ex1.mp3″]
Listen to mp3 Quicktime

PROS:
  • Simplest solution: Just Tune Edim7=0,+16,-17,+19, AND tune FM=0,-14,+2
  • Both chords would be close to the center of pitch
CONS:
  • Concert E and F are bumping right up next to each other; a minor second needs to be raised +12 cents

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Edim7 (E=0) and FM (FM=+12)
[player track=”http://bradkerrgreen.com/wp-content/uploads/2011/03/FMoverEdim7-ex3.mp3″]
Listen to mp3 Quicktime
Edim7 (E=0) and FM (Gliss 0 to +12)
[player track=”http://bradkerrgreen.com/wp-content/uploads/2011/03/FMoverEdim7-ex4.mp3″]
Listen to mp3 Quicktime

PROS:
  • Concert F is sharp on the instrument (if you tune to tuning Bb/C)
  • Concert A ends up being closer to ZERO
  • More space between the Edim7 and the FM
CONS:
  • The chord will resolve at +12 sharp

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Edim7 (Edim7=-12) and FM (F=0)
[player track=”http://bradkerrgreen.com/wp-content/uploads/2011/03/FMoverEdim7-ex2.mp3″]
Listen to mp3 Quicktime
Edim7 (Gliss 0 to -12) and FM (F=0)
[player track=”http://bradkerrgreen.com/wp-content/uploads/2011/03/FMoverEdim7-ex5.mp3″]
Listen to mp3 Quicktime

PROS:
  • Concert G & Db are closer to ZERO
  • Opens up the space between the Edim7 and FM
CONS:
  • Concert E will be -12 flat
  • Concert Bb will be -29 flat

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DOES YOUR EAR HEAR TWO SEPARATE CHORDS (FM/Edim7) OR ONE CHORD (Edim7intoFM)?

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Thanks for downloading!

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