10

I've got a question, I thought perhaps one of you fine human beings could help me out.

I am under the impression that you can find the relative minor key of a major key by counting down 3 steps, alternately, you can find the relative Major by counting up 3 steps from the minor. That minor should have the same amount of sharps and flats as it's relative Major. Correct so far?

So, I'm doing an exercise that requires me to identify the diatonic 7th chord for a particular scale degree of a particular minor key. The question is in the form of; B Minor, VII7 = _ _ _ _ _ . So for that instance, I got A7. I worked that out by first identifying the relative major of B, which is D, which I know has 2 sharps, F and C. Then I wrote out the B Minor scale and knew that A was the 7th degree, and that the 7th degree of a minor diatonic progression would make it a Dominant 7th, thus A7.

Now, when I go to the next example; F Minor, v7 = _ _ _ _, I try to repeat the same process but it doesn't work. A 3rd up from F is A, A Major has 3 sharps, so F C G are sharp, but F Minor obviously can't have an F# in it. So what am I missing? I know I can just write out F minor by the W-H-W-W-H-W formula, but I'm trying to do it with the relative major/minor formula. Halp?

Improve this question
3
  • 6
    A third up from F minor is Ab : ) That might be part of your problem
    – Stephen
    Apr 3, 2012 at 23:33
  • @Stephen is right. You should be calculating a minor third up and in your post you're pointing a major one. :)
    – tftd
    Apr 3, 2012 at 23:37
  • 5
    Note also that it's 3 half-steps, rather than steps.
    – user28
    Apr 3, 2012 at 23:40

3 Answers 3

Reset to default
8

F minor has 4 flats (Bb, Eb, Ab, Db) its relative major would be Ab Major. Knowing that the v7 for F minor is a C minor 7th (C, Eb, G, Bb) as per the f minor scale but if we are in the context of the F harmonic minor then this chord would be C, E, G, Bb. Context matters here. (corrections made.)

I think this is a kind of round about way at learning relative chords. Better to learn your key signatures by heart as a more direct route to the answer. Thinking about the relative major and minor has its place but this does not appear to be here.

Improve this answer
2
  • Thanks for the help guys, it was just a careless mistake in reading comprehension, I was going up/down in whole steps, not half-steps. DUH!
    – John Bones
    Apr 4, 2012 at 0:13
  • Not a problem. Keep those whole steps in mind if you ever need to use the whole tone scale.
    – filzilla
    Apr 4, 2012 at 17:57
1

This may sound annoying and hard to you, but to avoid this type of problem you could try memorizing which keys have which sharps and flats so you don't have to rely on counting half steps. This way you can quickly think "E♭ major has three flats, c minor has three flats..." without counting the half-steps.

Improve this answer
1

The way I was taught it is to go down from the Major Key we have a whole tone and then another semi tone to a different note. So for instance.

D Major. Go down a whole tone -> C. Then another semi tone to a different note -> B

C Major go down a whole tone -> Bb. Then another semi tone to a different note -> A

Ab Major go down a whole tone -> Gb. Then another semi tone to a different note -> F

And so on and so forth.

Improve this answer

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.