Can someone help me figure out this music theory KEY finding question?

Question

Messing around Sunday I came up with a song that has the following Chord Progression. I'm just learning music theory and am having trouble on identifying the key. The chord progression is: C7 D7 F7 E7 C7 D7 F7 G7 I'm curious because I'm trying to see how this progression fit's into they key the modes and the scales it would work with. I have used the reverse key finders and come up with Gm or Am but don't see how it fit's into those keys in terms of scales. Thanks Everyone, Kevin

Answer 1

In my opinion,

the origin key is most likely C mixolydian or C Blues. A song with that much movement from dominant 7s must be particularly unstable and wouldn't sit naturally in a major or minor key in a traditional sense. Each chord in the progression has its own chord scale, which is chosen based off the notion of picking a scale that is most related to the scales that come before and after it in the progression. This means having the most notes that are present in both keys when comparing two chords that are adjacent. This is probably a jazz tune, which is modulating through a sequence of mixo scales from the root of each chord in sequence. The melody will also serve you in revealing the key, so focus on which notes and tones are most emphasized within that!

Best,

Jake