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> Secondary Dominant
tonyk
Mar 3 2013, 06:44 AM
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Mar 3 2013, 06:44 AM


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Hi.I have a progression with A7 -Dmaj.A7 is acting as secondary dom. It was suggested to me that over the A7 I should play 5th mode of D harmonic minor. Is this a suitable scale to use.I was thinking A mix was better choice.Thanks

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The Professor
Mar 3 2013, 09:10 AM
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Mar 3 2013, 09:10 AM


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Hey. I would go with A mixo if it resolves to a Dmaj7 chord. Probably a better fit.

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tonyk
Mar 3 2013, 10:34 AM
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Mar 3 2013, 10:34 AM


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Thanks.does the fact that next cord was just D change your thinking ie not maj7

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The Professor
Mar 3 2013, 10:48 AM
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Mar 3 2013, 10:48 AM


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QUOTE (tonyk @ Mar 3 2013, 09:34 AM) *
Thanks.does the fact that next cord was just D change your thinking ie not maj7


Not really. If it was Dm then I would say 5th mode Harmonic Minor would be a good choice. So it's the maj7 that makes me think Mixo, since A mixo is the same notes as D major. That's all.

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klasaine
Mar 3 2013, 06:22 PM
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Mar 3 2013, 06:22 PM


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By the way, A7 in this case is not a secondary dominant.
A7 is just the V of D (maj/min or maj7).
A 'secondary' dominant would be (in the key of D maj) E7, F#7 or B7.

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tonyk
Mar 3 2013, 09:06 PM
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Mar 3 2013, 09:06 PM


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Thanks Ken.rest of progression was in G harmonic minor
Gm Eb A7 D G7 Cm Ab D7

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The Professor
Mar 3 2013, 09:07 PM
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Mar 3 2013, 09:07 PM


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Yeah, if you are in G minor then A7 is a secondary dominant, but if it moves to the key of D major, then it's a new key so not Secondary. All depends on where it goes and for how long from that A7 chord .

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casinostrat
Mar 3 2013, 09:37 PM
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Mar 3 2013, 09:37 PM


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QUOTE (klasaine @ Mar 3 2013, 05:22 PM) *
A 'secondary' dominant would be (in the key of D maj) E7, F#7 or B7.


Basically thats the 2nd, 3rd, and 6th degrees of the D major scale, right?

So what would normally be E minor, F# Minor and B Minor would become E7, F#7, or B7 if they were turned into secondary Dominants?

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The Professor
Mar 3 2013, 09:47 PM
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Mar 3 2013, 09:47 PM


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Well it could be a secondary dominant. Basically, a sec dom is any 7th chord in a key that resolves to a chord that is not the tonic, and that doesn't cause a modulation, though that is debatable.

So, if you are in G minor, then anything but D7 is a sec dom unless it leads to a new key center, so if it went A7-Dmaj7-D7-Gm then it is a sec dom since it didn't leave the original key, just took a detour.

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tonyk
Mar 3 2013, 10:05 PM
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Mar 3 2013, 10:05 PM


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QUOTE (The Professor @ Mar 3 2013, 08:47 PM) *
Well it could be a secondary dominant. Basically, a sec dom is any 7th chord in a key that resolves to a chord that is not the tonic, and that doesn't cause a modulation, though that is debatable.

So, if you are in G minor, then anything but D7 is a sec dom unless it leads to a new key center, so if it went A7-Dmaj7-D7-Gm then it is a sec dom since it didn't leave the original key, just took a detour.

Key was G harm min. Gm Eb A7 D7 G7 Cm Ab D7
A7 & G7 sec Dom and Ab Neapolitan chord
Was confused why I was recommended to use 5th mode of D harm min over A7

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The Professor
Mar 3 2013, 10:11 PM
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Mar 3 2013, 10:11 PM


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Yeah. To me that is a V of V of V progression resolving to the Cm. So it is a "dominant chain" progression. You could use 5 th mode HM. But I think mixo or 4th mode Melodc Minor over those chords.

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tonyk
Mar 3 2013, 10:16 PM
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Mar 3 2013, 10:16 PM


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QUOTE (The Professor @ Mar 3 2013, 09:11 PM) *
Yeah. To me that is a V of V of V progression resolving to the Cm. So it is a "dominant chain" progression. You could use 5 th mode HM. But I think mixo or 4th mode Melodc Minor over those chords.

Thanks

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klasaine
Mar 4 2013, 03:30 AM
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Mar 4 2013, 03:30 AM


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QUOTE (tonyk @ Mar 3 2013, 08:06 PM) *
Thanks Ken.rest of progression was in G harmonic minor
Gm Eb A7 D G7 Cm Ab D7


Sorry, had no idea you were in Gm.

*Yes - simplified, a sec/dom in a major key (as long as we stay diatonic) would be those minor chords turned into dominant 7ths.

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