Sus4 is a 11th chord?

[popcornn]

Hi, oooops I put this message in the wrong place, should be students corner. Mayby mod' will move it)

The sus4 chord in this excerpt is this not a 11chord? what's the diference?

Excerpt from:solo jazz piano the linear approach by neil olmstead

pdf excerpt attached below. Thanks

[nystul]

In classical music, a suspended fourth is held over from the previous chord instead of leading down to the third.  Here you can see that there is a G as part of the A-7 chord which is held while the bass changes to D.  But this distinction isn't really considered in jazz or popular music charts.

From the jazz perspective, Dsus is simply the easiest way to describe the harmony.  First of all, you do have an unaltered fourth (G, not G#), and chords with that note do tend to sound like sus regardless of how the chord is voiced.  In this case, we don't have a third.  The third in jazz tends to define the chord, so if it isn't there it is often a sus chord.

With chord symbols, the difference between 4 and 11 or 6 and 13 is mostly just about conventions.  It's easy to look at it and think a 4 is a really important part of chord and 11 is just an extension, but at the end of the day they are the same note.  Different people use different conventions too.  In a pop fake book, you might see this sort of chord described as "C/D" or "Am7/D".  In jazz book you are likely to see Dsus or Dsus7, and adding the 9th is your own prerogative.

[cjp_piano]

It's sort of like C9 being the same as C2 and C13 being the same as C9. But really they ARE NOT the same.  The extended chords (9, 11, 13) imply the other chord tones too. So,

C9= C E G Bb D
C11= C E G Bb D F
C13= C E G Bb D F A

However, C2= C D E G
Csus = C F G
C6= C E G A

[keypeg]

It's sort of like C9 being the same as C2 and C13 being the same as C9. But really they ARE NOT the same.  The extended chords (9, 11, 13) imply the other chord tones too. So,

C9= C E G Bb D
C11= C E G Bb D F
C13= C E G Bb D F A

However, C2= C D E G
Csus = C F G
C6= C E G A

What if you had:
C E G D ?
Is that C add 2 because you don't have the 7th (Bb?)

Is there a time when C E G A is Am/C ?

[cjp_piano]

What if you had:
C E G D ?
Is that C add 2 because you don't have the 7th (Bb?)

Is there a time when C E G A is Am/C ?

I wasn't referring to any specific voicing. So CDEG would be the same as CEGD. But yes, it pop music many times there is a C2 which just means add the 2 or 9, but no implied 7th.

And yes, CEGA could be C6 or Am/C, same thing. But again, it depends on the context. In G major, if you saw it followed by a D chord then G, it would make sense to analyze it as ii6 V I

[freejazzlessonsdotcom]

Hi, oooops I put this message in the wrong place, should be students corner. Mayby mod' will move it)

The sus4 chord in this excerpt is this not a 11chord? what's the diference?

Excerpt from:solo jazz piano the linear approach by neil olmstead

pdf excerpt attached below. Thanks

Many people consider 11th chords and (sus4)7 chords different.  Technically this is correct according to theory books.  In real world usage it can be a different story though.    Often times in jazz and R&B tunes the 11th chords functions as a dominant sus chord type.  So, they're similar.

  In the example you attached the voicing could have been written as D11 or D7sus4.  They function the same way in this situation.

[brianlucas]

In general, when you use 9, 11 or 13, the 7th is implied as well. 2, 4 and 6 is usually the chord without the 7th. I say usually because there are only guidelines and not everyone follows the same rules. Sometimes you have to use your judgement, figuring out which one sounds better. Also, for a sus, that implies that the third will not be played, since the third is suspended to either the 2 or the 4.