Here's a confession.
I have in the past spent quite some time learning music theory and most of it has been very benificial, but I have never ever seen any use in the concept of modes. And yes, I play jazz(y) music primarily.
In my view the whole mode thing is a big misunderstanding (yeah, I like a small dose of provocation, now and then
).
Say a song is in the key of G major and at some point you have a D7 chord.
Now I've heard teachers pointing out that the D mixolydian scale would be in order there.
Sure, when improvising a bass line you would use a c rather than a c# there. But that is because D7 has a c in it. And that is because you're in the key of G. The mere fact that Gregorian chant has used a mode were whole and half steps occured similarly is completely irrelevant.
And also, in a D mixolydian mode, the tonic would be D, not G.
In classical music this occurs all the time. In a Mozart sonata you may find a scale d-e-f#-g-a-b-c-d running up and down over a D dominant 7 chord (D7) and nobody will say that Mozart used the mixolydian church mode there. Because he didn't. He used the tones that were applicable to the key he was working in.
Using scales in pop or jazz music isn't any different.
Of course a D7 chord may appear in other keys than G major, and it can be interesting to analyze that, but when I am reading from a chord chart and see a dominant 7 chord, I just use the appropriate tones to that chord, including a minor 7th.
Again, the whole notion that a church mode existed with a shifted tonic doesn't come into play.
Also note that D mixolydian is not G major played from the 5th tone. That's just a memory aid. It's not like the ionian mode was the mother of all and the rest was derived from that.
Well anyway, I know most don't agree, but I strongly feel that studying modes in pop/rock music is clouding the vision of how chords function in a tonal (not modal) context.
Songs exist that are based on true modality but they are a minority and in my view don't justify the extreme focus modes receive in music teaching.
Feel free to disagree, obviously.
[\confession]
I have in the past spent quite some time learning music theory and most of it has been very benificial, but I have never ever seen any use in the concept of modes. And yes, I play jazz(y) music primarily.
In my view the whole mode thing is a big misunderstanding (yeah, I like a small dose of provocation, now and then
).Say a song is in the key of G major and at some point you have a D7 chord.
Now I've heard teachers pointing out that the D mixolydian scale would be in order there.
Sure, when improvising a bass line you would use a c rather than a c# there. But that is because D7 has a c in it. And that is because you're in the key of G. The mere fact that Gregorian chant has used a mode were whole and half steps occured similarly is completely irrelevant.
And also, in a D mixolydian mode, the tonic would be D, not G.
In classical music this occurs all the time. In a Mozart sonata you may find a scale d-e-f#-g-a-b-c-d running up and down over a D dominant 7 chord (D7) and nobody will say that Mozart used the mixolydian church mode there. Because he didn't. He used the tones that were applicable to the key he was working in.
Using scales in pop or jazz music isn't any different.
Of course a D7 chord may appear in other keys than G major, and it can be interesting to analyze that, but when I am reading from a chord chart and see a dominant 7 chord, I just use the appropriate tones to that chord, including a minor 7th.
Again, the whole notion that a church mode existed with a shifted tonic doesn't come into play.
Also note that D mixolydian is not G major played from the 5th tone. That's just a memory aid. It's not like the ionian mode was the mother of all and the rest was derived from that.
Well anyway, I know most don't agree, but I strongly feel that studying modes in pop/rock music is clouding the vision of how chords function in a tonal (not modal) context.
Songs exist that are based on true modality but they are a minority and in my view don't justify the extreme focus modes receive in music teaching.
Feel free to disagree, obviously.

[\confession]
or Ionian Mode on C