17

I looked up the chord progressions for all major and minor scale keys, but this combination doesn't match any of them.

Why does it work well?

22

I would actually consider this to be ♭III - IV - I in B major, with the ♭III borrowed from the parallel minor key. In fact, with the ♭III chord, it's somewhat similar in character to one of the "Fellowship of the Ring" themes: I - ♭III - I (in your key, that would be Bmaj - Dmaj - Bmaj). It's the first three chords here.

Soundtracks aside, this type of chord progression is often used in modal blues pieces, or modal rock that is inspired by blues. The general idea is to reduce the dependency on dominant/tonic relationships (which is often replaced by subdominant relations, such as IV-I). The problem comes when you hit a minor chord that you want to change into a major chord. In more classical styles, this is done simply by raising the third, but this creates a secondary dominant that needs to resolve. In modern modal styles, a major chord is instead created by lowering the root and fifth of the chord a half-step (and leaving the third in place). This gives roughly the same result as if one played major chords whose roots were in the minor scale. The resulting chords sequence looks something like this:

I - ♭II - ♭III - IV - V - ♭VI - ♭VII

Notice how all the chords are now major, and there are no secondary dominants.

  • 3
    You can get a flat-sign with ♭ (doesn't work in comments, conveniently). – luser droog Nov 17 '14 at 5:28
  • Yeah... I'm not going to be remembering hexadecimal HTML entities. Fortunately, I don't need to, since I can just copy & paste the symbol directly from the other answer now. In the past, I've actually Googled for sharp and flat signs to copy/paste into the text, but obviously I don't bother to do that for every answer. But since you insist... – Caleb Hines Nov 17 '14 at 5:36
  • It was just the ♭ and B in the same sentence that jumped out at me. I actually had the edit-view open when you last edited. So it felt wrong to do it myself while you were actively editing. – luser droog Nov 17 '14 at 5:40
  • 1
    @luserdroog: ♭ works just as well and is almost as easy to remember as ♭... – leftaroundabout Dec 17 '14 at 22:57
  • thanks for this. I'm trying to work a good quitar solo for The Bangles, Walk like an egyptian which has this progression. After a lot of research I'm going to concur with you that this is indeed in the key of B, but add that its actually B Phrygian. which makes sense in the case of the bangles song because they were deliberately going for an eastern sound. – Richard Jul 25 '15 at 23:11
5

Not all the chords in a chord progression need to be strictly in the key. The best way to look at this chord progression is a ♭VII - I - V in the key of E major. The D major chord is a chord that exists in E mixolydian (on of the other modes of E) and it is very common for someone playing in the key of E major to borrow it. The E major and B major are just standard chords from the key of E major.

It is used a lot today without people realizing where it comes from. It generally tends to give the progression a slightly darker and if this is a looped progression would make it sound a little more dark because the when going from B major to D major, the major 3rd of the B majro chord (D♯) descends. You are most likely accustom to hearing similar types of progressions and that is why you like the sound of it.

  • Hi Dom. Thanks a lot for the answer. However i am not too sure about the progression sounding dark. It sounded rather happy and uplifting imo.( to each his own :) ) – tr_quest Nov 17 '14 at 4:09
  • This progression is also used in the outro of illumination theory by dream theater – tr_quest Nov 17 '14 at 4:10
  • @TariqIbrahim The way I played it it had a dark vibe. It may be how I voiced it. – Dom Nov 17 '14 at 4:46
  • I agree it the Bmaj7 gives it a darker sound, but it sounds like it resolves there also. – r lo Nov 17 '14 at 13:41
  • @Dom in other words, that progression could be derived from A major (i.e, A ionian), couldn't it ☺ – mey Feb 3 '15 at 18:05
0

While music can be very formula driven similar to mathematics the real stuff happens when you go away from the formulas or go put of the box. Flat 7 and Flat 3 notes & chords are very common particularly in blues and jazz. These variations from the norm are what can provide color and character to music.

When in doubt go with the words of the great Duke Ellington - "If it sounds good, it is good"

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