Understand the scales, keys, and everthing else that goes with making songs. Then listen to the song very carefully.
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Need I say more?
With respect, I would say yes, you do.
If you're adducing that link to argue that root = tonic, as you said earlier, the article doesn't say that or anything like it.
If you mean the link as an argument that C6 /= Am7/C, the article doesn't say that either.
But here comes mine. If, in the key of F, I read C6 (harmonic function is V) I know that most likely I (F) or VI (Dm) is coming next, whereas, when I read Am7/C, we are very likely proceeding to a chord where Bb (or B) is to be the bass note. That chord could either be Bb (IV) or Gm (ii) or maybe G7 (ii+).
To me that's quite enough to call it a difference.
Here's where we differ, then. I don't think C6 has a very strong dominant "pull" in the key of F. C7 or extensions thereof, yes, but not C6. So I don't feel I know anything of the sort about what would come next. I don't feel that there is any basis for assuming that C6 has to pull one way and Am7/C another. The sound doesn't back that up.
The larger point is that it doesn't even matter what you would predict comes next. It only matters what actually could, and what actually does. So an Am7/C could just as well be followed by an F or a Dm (as you cite for C6) as by a Bb or Gm. And there is not a single harmonic basis of which I'm aware for saying that that would be wrong if I had chosen to write it that way. Nor would there be such a basis if I had chosen to write it as C6.
There are, as I said, reasons of convention and habit why in a given case a given writer might choose to write the chord as either C6 or Am7/C. My point is that this doesn't mean there is a real and significant difference in harmonic terms.
A major 6th chord is generally used as a color change for the tonic major 7th chord, in the jazz idiom. Rather than bang out 2 bars of one chord. SEPTEMBER IN THE RAIN is a good example, depending on whose changes you like to use.
And it remains a tonic chord if I play a 3rd inversion.
So we sorted that out very nicely. My focus is strongly on classical sequences, even when I play jazz or pop. It helps me to find bass lines I like. So I always try to look for sequences lke I - iii - vi - ii - V7 and the like.
IMHO, the function of C6 in F could only be V. I have to disagree with you on the dominant pull of C6.
In many jazz standards, the 6 is in the melody right before the song comes to an end.
And what other function could C6 have? If it were iii, I would definitely write Am7. The point of chord names is to indicate those functions. That's just what the Wiki article says. And it is precisely my point as well. A notorious example is Adim = Cdim = Ebdim = F#dim. Are they the same? As separated chords, they are. In chord progressions, they are not.
There are many composers who write very good and creative music, but did not study musical theory. So their chords go in every direction... and everything s possible, you're right about that.
More proof that theoretical knowledge is sometimes overestimated![]()
SEPTEMBER IN THE RAIN
"Walking Bassics" is a terrific book. I've been practicing from it when I can, and just reading from it when I'm away from my bass. I'm finding your explanations wonderfully easy to understand. I'm also aware, though, that what is easy to read is still going to take a lot of work, but that's okay since it feels like I have some real direction now.
One thing I want to ask: I can follow your step-by-step approach to building walking bass lines on paper--and that's an enormous help for me right there. Now, when it comes to improvising walking bass lines on the fly . . . that seems like another huge leap for me. Is it the sort of thing that--if you just keep studying pro bass lines, and writing new ones yourself, and spend a good bit of time practicing them, you'll suddenly find yourself able to improvise them on the fly.
Please tell me that's right, okay?
Remember that the conventions we use to notate and analyze things are secondary and logically subsequent to what is actually happening. What I'm saying is that regardless of whether you call something Am7/C or C6, the same thing is happening as you go through harmonic motion.
To the best of my knowledge, I have never played any changes that included a dominant C6 in the key of F. In the music I've played so far, C6 is usually an alternative to Cmaj7 or C6/9 - in other words, its function is I in the key of C, just like Ed explains a few posts above.IMHO, the function of C6 in F could only be V. I have to disagree with you on the dominant pull of C6.
This is a great thread. Chris, Ed, your posts are especially helpful. A keeper.
This is a great thread. Chris, Ed, your posts are especially helpful. A keeper.