Richard,
The story you heard is what Jimmy Day himself told me and Bryan Adams in Knoxville 10 years ago. This is what I was going by for my point.
So as far as I'm concerned, it doesn't matter anymore. I'm going to let it go since Jimmy aint around to tell his side of the story anymore.
Mike Sweeney
When BE split the pedal....
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I've always found it interesting that those two notes by themselves imply two different 7th chords. For example, take B and F. They could be a a G7 or a C#7.<SMALL>Ok, being trained by a Julliard "Ole mama lion", she drilled and grilled into my head many things about musical theory. And one of the things she taught was; if you can only play two notes in a 7th chord, the notes must be the 3rd and 7th tones of that chord.</SMALL>
A related phenomenon is the two ways that the interval can resolve. You raise one a half step and lower the other a half step. "Inward" or "outward":
B-F resolves inward to C-E (G7 to C)
B-F resolves outward to A#-F# (C#7 to F#)
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This is at the heart of the musical concept of "tri-tone substitution". The G7 chord in the previous example can be replaced with the C#7 chord in many cadences because they share the same tri-tone B-F interval. As an ancillary point, the C# root moving to the C chord further intensifies the resolution.<SMALL>A related phenomenon is the two ways that the interval can resolve. You raise one a half step and lower the other a half step. "Inward" or "outward":</SMALL>