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OK...........I'm trying to find a SIMPLE answer to a question about modulation. I realize modulation is raising or lowering the key the basic song is being played in. But, what is the basis? Is the Key of C the base (C-D-E-F-G-A-B-C')? For example; if I'm playing in C, to modulate up 2 keys takes me to E? Or if I'm in G, up 2 keys takes me to B? The only information I've been able to find is very technical in theory.
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I am not aware of that use of the term "modulation." I call that "transposing."
If you are in the key of C, then if you transpose up to keys, it would be E. One key would be D. If you transpose it down one key it would be B. If you transpose it down two keys, it would A.
Remember that if you are using the major scale, you have a step pattern of whole, whole, half, whole, whole, whole, half. So if you are using the major scale and transpose up one key, it would be one step (capo two frets higher when using the same chord shapes). If you transpose up two keys, it would be two steps (capo four frets higher when using the same chord shapes). But if you transpose up three keys, it would require putting a capo FIVE frets higher when using the same chord shapes.
I hope that did not serve to confuse you.
Modulation, as I understand it, has to do with vibration reproduction out of speakers. Or, it has to do with the width a string vibrates. Neither of those meanings relates to the question I understood you to be asking, but it is possible (likely even) that someone, somewhere uses modulation to mean transpose.
This may be a good topic to move to the Theory forum.
- Zurf
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Common chord modulation (also known as diatonic pivot chord modulation) moves from the original key to the destination key (usually a closely related key) by way of a chord both keys share. For example, G major and D major share 4 chords in common: G, Bm, D, Em. This can be easily determined by a chart similar to the one below, which compares chord qualities. The I chord in G Major—a G major chord—is also the IV chord in D major, so I in G major and IV in D major are aligned on the chart.
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What chart?
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The chart wouldn't copy correctly, so here is the site.
http://en.wikipedia.org/wiki/Modulation_(music)
Last edited by bensonp (2012-04-09 18:11:09)
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So, If the song I'm playing (Good Hearted Woman by Willie Nelson on this site) is in D-A-G and the ending is "chorus up one key to end", I would play a chorus in A-D-E?
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Here are a couple of charts like Pete was talking about.
Key of G Major:
I ii iii IV V vi vii
Gmaj Amin Bmin Cmaj Dmaj Emin F#dim
Key of D Major:
I ii iii IV V vi vii
Dmaj Emin F#minGmaj Amaj Bmin C#dim
Gmaj is the I chord of Gmaj and the IV chord of Dmaj. Emin is the VI chord of Gmaj and the II chord of Dmaj, and so on.
Dean, I think you would transpose to E, but I'm not any good at music theory. I think Pete had a good definition for Modulation. Modulation is somewhat relative, if I'm correct. It depends on the listener, but there are a few rules to follow.
Modulation is when music changes keys (sometimes a temporary change for a mood change, or a permanent change 'grand finale'). For example, Any Man of Mine, Shania Twaine (got that in my head so I grabbed it) has a key change (grand finale) about two thirds into the song. It goes from Ab to Bb. This is a fairly easy key change because these two keys are closely related in the Circle of Fifths. These keys have a difference of two accidentals (Ab has four flatts and Bb has two flatts. 4-2=2) Ab and Bb have two chords in common, Eb and Bb. These two chords (Eb and Bb) would make good pivit chords. A pivit chord (like Pete explained) is a 'connecting' chord. The last chord before the Modulation. Most modulations last a couple of seconds, but that depends on the speed of the song (and modulation is really for the listener, so it also depends of when the listener notices the change.) Hope that helps, and be sure to not take all I say as Gospel, cause I'm wrong a lot! There are a couple of experts on here though, so they'll probably post in a bit. 
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The rationale I used is related to the example in the "Wiki" site. From G, a P5 would be D. So I counted a P5 from D and got to A. An A progression is A-D-E. RIGHT??????
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Yes. A typical A progression would be A-D-E. And, yes, now that I think of it, you would transpose to A.
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Thanks a BUNCH for your time and input!! I'm gonna make a copy of "the circle" and post it in my "misic closet" for referrence.
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Actually, I'm not sure about key ups. Experts??? Please help??
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Y'all sure do think a lot. Play something and see if it works. To borrow from Topdown and Jerome, "If it sounds good, it is good."
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Haha, Zurf! For those of us who aren't so great at hearing music, we gotta go by the books. I can't find a hard core answer for what one key up from D would be. I found an article that said if you're playing in C one key up would be C#. That leads me now to think a key up from D would be Eb. Dunno, still looking.
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E.
One key up from D is E. In Good Hearted Woman, if you are playing A - A7 - E - D as the chords, move the final chorus up to B7 (no B, it's evil), A, and E.
You're psyching yourself out.
If I get the chance, I'll record it and shout out the chords I'm using. I'll have to e-mail it to you, or whoever else wants it, as I don't have a Youtube account. Or pop onto one of the Skype jams and I'll play the song.
- Zurf
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I'll have to give it a try this afternoon to see what it "sounds" like to a "newbie".
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Alright then. I should have stuck with my first answer. LOL. Glad to know for sure now. Thanks Zurf. Good luck Dean.
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