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Why does this chord progression sound good even though it's using notes not in the correct key?

Well, nearly everybody is right, in a way. Triads are indeed chords, but chords are not necessarily triads.

Perhaps one source of disagreement, apparent or actual, is that the word "major," like many other terms in music, is used to apply to more than one concept.

From everything I've ever heard and seen in 50 years of playing (classical, rock, jazz, and world [whatever that means]), when you ask someone to play a C major chord, the overwhelming majority of the time what you're asking for, and what you get, is a C major triad: C E G. If that's not what you want, you typically ask for something else. So in usual practice, "major," as the specific name of a type of chord to play, routinely means major triad. You can always make an argument that that's sloppy, but in practice this is what's usually done.

But it's no less true that "major" has a sense as the blanket term for a whole family of chords that includes all the variants stringtapper mentioned, and for the reason mentioned. In this equally valid sense, Cmaj7, C7, C6, etc are all "major" chords in that they belong to the "major" family.

As in many things, it helps to define the context of the discussion.
 
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I never said the common definition of chord didn’t include triads. Only that the conflation of the two terms is not precise enough language to use when trying to teach novices.

Okay...it sorta seems that you are arguing that a triad is not a chord. You also seem to be arguing that C Maj notation is ambiguous, but that is not what I was taught. I was taught C Maj specifically designates a triad, but not an inversion.

Also it's really not that hard to understand the concept that a triad is a chord spelled with three notes. So I don't agree that there is a problem intermingling the term triad and chord. The teacher should take a moment to explain, as you did in post #60, and the student should learn to understand the nuanced meaning of these basic terms. If this is done there is no conflation.

This subject grows extremely tiresome and IMHO is off topic.
 
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Well, nearly everybody is right, in a way. Triads are indeed chords, but chords are not necessarily triads.

Perhaps one source of disagreement, apparent or actual, is that the word "major," like many other terms in music, is used to apply to more than one concept.

From everything I've ever heard and seen in 50 years of playing (classical, rock, jazz, and world [whatever that means]), when you ask someone to play a C major chord, the overwhelming majority of the time what you're asking for, and what you get, is a C major triad: C E G. If that's not what you want, you typically ask for something else. So in usual practice, "major," as the specific name of a type of chord to play, routinely means major triad. You can always make an argument that that's sloppy, but in practice this is what's usually done.

But it's no less true that "major" has a sense as the blanket term for a whole family of chords that includes all the variants stringtapper mentioned. In this equally valid sense, Cmaj7, C7, C6, etc are all "major" chords in that they belong to the "major" family.

As in many things, it helps to define the content of the discussion.

Well put.
 
Okay...it sorta seems that you are arguing that a triad is not a chord. You also seem to be arguing that C Maj notation is ambiguous, but that is not what I was taught. I was taught C Maj specifically designates a triad, but not an inversion.

Also it's really not that hard to understand the concept that a triad is a chord spelled with three notes. So I don't agree that there is a problem intermingling the term triad and chord. The teacher should take a moment to explain, as you did in post #60, and the student should learn to understand the nuanced meaning of these basic terms. If this is done there is no conflation.

This subject grows extremely tiresome and IMHO is off topic.

I don’t know where in the world you’re getting that I ever said a triad is not a chord.
 
Sure they do. A Major 7th chord is major after all.

Major triads do not include the seventh, so maybe that’s what you meant?
A major seventh chord isn't a major chord with a seven tacked on. It refers to playing the seven a half-step up.

On C7 the 7 is played as a Bb. On Cmaj 7 the 7 is a B. And so on. You can have a C minor chord with a major 7.
 
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A major seventh chord isn't a major chord with a seven tacked on. It refers to playing the seven a half-step up.

Nope, it refers to the quality of the seventh above the root. A major 7th chord has a…… wait for it, major seventh!

What you're saying about "playing the seven a half-step up" sounds like you're assuming that any "tacked on" seventh would by default be a minor seventh above the root. Maybe that's a common assumption where you're from, but I've never heard it (nor held it).
 
Nope, it refers to the quality of the seventh above the root. A major 7th chord has a…… wait for it, major seventh!

What you're saying about "playing the seven a half-step up" sounds like you're assuming that any "tacked on" seventh would by default be a minor seventh above the root. Maybe that's a common assumption where you're from, but I've never heard it (nor held it).
Well, as I am studying piano and playing jazz standards that include a lot of major seventh chords, I am noting that the major seventh chords I'm playing are all augmented at the seven by a half-step from where the basic seventh chords have the seven. Not sure how much more complicated it needs to get from there, but I'm sticking with what's working for the music I'm playing :)

Examples are helpful.
 
Well, as I am studying piano and playing jazz standards that include a lot of major seventh chords, I am noting that the major seventh chords I'm playing are all augmented at the seven by a half-step from where the basic seventh chords have the seven. Not sure how much more complicated it needs to get from there, but I'm sticking with what's working for the music I'm playing :)

Examples are helpful.

Hmm, yeah it sounds like you're taking a dominant seventh chord as a sort of "default" and then looking at major seventh chords as being an alteration of that. That's definitely making things a bit more complicated than they have to be. Better to simply learn the basic intervallic structures of the main types of seventh chords, rather than having to go through some mental Rube Goldberg machine to get to the answer.
 
Hmm, yeah it sounds like you're taking a dominant seventh chord as a sort of "default" and then looking at major seventh chords as being an alteration of that. That's definitely making things a bit more complicated than they have to be. Better to simply learn the basic intervallic structures of the main types of seventh chords, rather than having to go through some mental Rube Goldberg machine to get to the answer.
Well, here's what I'm looking at. I use a DAW (LOGIC) while I am learning piano, which gives me the names of the chords I am playing, and looking at that is what's helping me stay straight on whether or not I am playing them correctly.

There may be other terms for things but if I play a Cmaj7 with an augmented seven and I flatten the third, this is what I see:

Screen Shot 2020-10-26 at 3.49.53 PM.png


That may be an awkward term, but it's accurate to what I'm playing and it's accurate in terms of what I need to do with my fingers in order to get there.
 
Although reading back through that last post, now I'm wondering if this is a case of the dreaded "seventh/seven/Seven" terminology striking again.

"seventh chord" = chord that includes a seventh above the root

"seven chord" = a colloquial shorthand term for a dominant seventh chord

" (the) Seven chord" = chord built on the seventh scale degree of a key
 
Well, here's what I'm looking at. I use a DAW (LOGIC) while I am learning piano, which gives me the names of the chords I am playing, and looking at that is what's helping me stay straight on whether or not I am playing them correctly.

There may be other terms for things but if I play a Cmaj with an augmented seven and I flatten the third, this is what I see:

View attachment 4031699

That may be an awkward term, but it's accurate to what I'm playing and it's accurate in terms of what I need to do with my fingers in order to get there.

Holy hell. Yeah, that's a nightmare within a hellscape. And a road towards a seriously ****-ed up understanding of music, and one that I suggest you move away from as quickly as possible.

Why? Because programming smart chord detection engines is hard. Ever tried modulating while you're using Logic's chord display? Yyyyyyeah… things will get weird. The computer can only go so far in understanding the context of what you're doing.

Also, you aren't "augmenting" the seventh in that example (well, depending on what key you're in). But in C major, the seventh above C is B-natural. In other words it's already a major seventh. If you were to actually augment the diatonic seventh above C you would get a B-sharp… which would sound just like a C (and also register as such in Logic's chord display).
 
Although reading back through that last post, now I'm wondering if this is a case of the dreaded "seventh/seven/Seven" terminology striking again.

"seventh chord" = chord that includes a seventh above the root

"seven chord" = a colloquial shorthand term for a dominant seventh chord

" (the) Seven chord" = chord built on the seventh scale degree of a key
Could be. I am not so concerned with how these terms are said as how they are written on the charts, because that's what I'm looking at when I play them.
 
Holy hell. Yeah, that's a nightmare within a hellscape. And a road towards a seriously ****-ed up understanding of music, and one that I suggest you move away from as quickly as possible.

Why? Because programming smart chord detection engines is hard. Ever tried modulating while you're using Logic's chord display? Yyyyyyeah… things will get weird. The computer can only go so far in understanding the context of what you're doing.

Also, you aren't "augmenting" the seventh in that example (well, depending on what key you're in). But in C major, the seventh above C is B-natural. In other words it's already a major seventh. If you were to actually augment the diatonic seventh above C you would get a B-sharp… which would sound just like a C (and also register as such in Logic's chord display).
It's augmenting where the "seventh note" is normally played in the C7 chord. Which, again, is kind of what you need to know in order to play the chord.

I'm not interested in moving away from what I'm doing as it's serving me pretty well in terms of learning to play these chord changes in the real book. I'm not sure what practical advantage I would gain from doing it some other way. Give me the chart, I'll play what's on the chart. That's kind of what happens in the real world. Is there any reason that's not reasonable?

The thing is, this may be a non-traditional approach but it is infinitely PRACTICAL in terms of letting me know what my fingers need to do. So that seems like an OK thing to me. We can continue this offline if you'd like; I'm not dismissing your ideas I just don't see the practical advantage and at the age of 61 having 40+ years spent in music I'm not sure I'm comfortable with the idea of changing how I learn to play music.