Theory Help

[quintinab]

What are the these chords and how are they built? Are there any alternate names for them?

Eb+7(#9)
D+7(#9)
C#+7(#9)
C+7(#9)

[Sillyie]

Δ is sometimes used for major,[24] instead of the standard M, or maj,
− is sometimes used for minor, instead of the standard m or min,
+, or aug, is used for augmented (A is not used),
o, °, dim, is used for diminished (d is not used),
ø, or Ø is used for half diminished,
dom is used for dominant.

The name of the chord is dominant 7♯9 chord but with the (+) sign it has to be called something else.


Eb+F#+G+Bb+D
D+E#+F#+A+C#
C#+D##(E)+E#+G#+B#  *this one kind of confused me bc I don't use C#,  I call it Db)
C+D#+E+G+B

it looks like a major7#9 to me

*Still learning*

[T-Block]

The alternate way of using the + to represent the augmented chord is by calling it #5 (because that what an augmented chord is, a major chord with a raised 5). So, all those chords would be dom7#5/#9. I'll post all the possible notes plus the most common voicing:

*Sidenote: don't be alarmed by enharmonic spellings of notes; sometimes, notes are spelled different in different keys, mostly to eliminate having to use double sharps and double flats


Eb7 #5/#9: Eb-G-B(Cb)-Db-F#(Gb),  Eb / G-B-Db-Gb

D7 #5/#9: D-F#(Gb)-A#(Bb)-C-E#(F), D / F#-Bb-C-F

C#7 #5/#9: C#-E#(F)-G##(A)-B(Cb)-D##(E), C# / F-A-B-E

C7 #5/#9: C-E-G#(Ab)-Bb(A#)-D#(Eb), C / E-Ab-Bb-Eb

[quintinab]

Thanks everyone