5

Examining this progression in F:

 | F | A7 | Dm7 | Bb, Bbm |

 | F, E7 | Gm7, C7 | F, D7 | Gm7, C7 |

In the fifth measure I really don't understand what role has the E7 chord because I can't identify as:

  • primary dominant - it isn't on the fifth degree of the scale
  • secondary dominant - it doesn't resolve to his relative first degree (Am7)
  • tritone substitution - it does not resolve to Eb his relative IIb

So what is the role of the chord?

4

It's just a passing chord on the way to Gm7 from F.

From Gm7 to E7 the D is common and the other notes are moving chromatically to get to Gm7. If you look at the notes each contain you'll see:

F -> E  -> F
A -> G# -> G
C -> B  -> Bb
C -> D  -> D

You'll notice the chromatic descending line in A to G and C to Bb and The F - E - F can be looked at as a neighboring tone.

  • Couldn't think of A -> G# -> G and C -> B -> Bb. Neat. +1 – Shevliaskovic Sep 8 '15 at 17:39
  • 1
    @Shevliaskovic yeah. If you're ever not sure about how chords fit together, just start listing the notes and try to connect them. Most of the time you'll see something interesting like in this case. – Dom Sep 8 '15 at 17:45
  • Thank you Dom..you gave me a new food for thought in analyzing chords progressions. – Joseph Sep 9 '15 at 7:31
0

In F major the subdominant chord is Bb7, and E7 is the tritone substitution of that chord.

The tritone interval G#-D appears in both chords.

In the E7 chord the G# functions as the 3rd and the D functions as the 7th.

And if you respell G# as Ab then the same interval Ab-D appears in the Bb7 chord, the Ab functions as the 7th and the D functions as the 3rd.

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