theshadow2001 said:
Ok so what always gets me is, for example say your playing along with a song with a certain chord progression. For this question say you were soloing which would be generally be more involved than your run of the mill root note bass line. As the song progresses through the chords are you constantly changing modes to suit the chord thats being played at that time? So for example say you played the progression: C, F, Am, G, Would you be playing C ionian then switching to F Lydian then to A Aeolian Finally to G Mixalodian. Always staying in the same key.
Or is the use of the modes more like writing a chord progression based on a particular mode. So if you wrote a series of chords say G Dm F G you could say that the song is based around G mixalodian scale and use that.
Or do you get your list of chord then play the modes that are said to go with this particular chord and as the chord changes choose one of the modes that is said to work with that chord and so on. What gets me with this one when they say that for example ionian and mixalodian go with Csus4 do you play C ionian or C mixalonian, which would obviously lead to notes that would be outside the key with respect to the mixalodian. Or is it C ionian and G mixalodian? This example is just an expansion of my first one really.
So what is the correct way to use modes. (yes yes I know there's no "correct way" for anything in music) Are all my examples valid uses of the modes? Is there a general rule of thumb or accepted and taught way of using modes that I may or may not have mentioned above.
It would be really cool to finally put and end to this question for me
Well, opinions differ. My own feeling, these days, is that when you're playing in a musical context that clearly establishes a particular tonality or modality, thinking of what you're doing as changing modes every single chord is mostly a waste of time. Within a given key/modality, it makes more harmonic sense IMO, and is easier, to think of yourself as performing harmonic motion within one harmonic space. IOW, if you're playing C Am Dm G7, there's no real benefit, in terms of understanding or facility, to thinking of that as four different modes. Might as well think of it as I vi ii V7 within a single key, C--it's both simpler and more accurate. This is especially true IMO when the chords are going by fast. If, for example, you're playing those chords two to the measure at 250 bpm, you probably don't want to make things any more complicated than they have to be.
Of course, sometimes the key or modality changes within a given song. Even so, you can often find local "areas" of harmony that could be described by a single tonality. Say, you're puttering along in C Am Dm G7, when all of a sudden you hit Bm7b5 E7 Am. Now your underlying tonality is A minor (harmonic), and all three chords function in terms of Am. SO you don't need to think of yourself as playing first in four modes, and then in three more new modes--you can just think of going from C to A minor. Somewhere around here there's a sticky that addresses parent or blanket scales; Chris Fitzgerald wrote a lot of it, and it bears on what we're talking about.
The situation is sort of different when the chords don't have such a clear harmonic relation to each other. In some types of pieces, the chords almost seem to be each forming their own little harmonic world, without really establishing a strong sense of a single key or modality. In that kind of situation, going to a different mode for each chord may be the best way to deal.
The idea of playing the mode(s) that the chord supposedly determines is something you have to be careful with. For one thing, with most chords, more than one set of notes can be played over them. It's not as if you can just automatically assume you play a D dorian every time you see a Dm7 or a G mixolydian every time you see a G7. You have to look at your harmonic options in terms of where the chord is coming from, where it's going, and what it's doing while it's here. So in your example of Csus4, the question of which mode to use depends on what Csus4 happens to be doing in that context. If the Csus4 is happening in the context of a C major tonality, you might approach it one way; if it's happening in F major, its function will be different, and you might approach it another way.
There's much more to this stuff than I've indicated here, but this is probably enough, or more than enough, for starters.
I realize this rather windy answer doesn't give you as definite an answer as you want, but the thing is, I don't think your quesion is quite answerable as you posed it. At any rate, I hope some of this helps.