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Your favorite bichords

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So, speaking of "clashing notes," what are your favorite examples of two different triads played together?

The "Petrushka chord" is a very famous bichord, C major + F# major creating a crunchy, dissonant sound.

I have some other favorites:

C major + D major. Creates a very "dreamy" feeling because of the Lydian implication.

C minor + Ab major. Equivalent to an AbM7. But when stated as two triads it creates a dissonant, tense feeling.

I and i (in separate 8ve)

I and bII (in separate 8ve)

D major, C augmented

I and IV

I and ii

C M7 and D M7

to rattle off a few

I really like C major + D# minor, or any transposed equivalent. When voiced as C - D# - E - F# - G - A#, It has a really cool Scriabineque feel to it.

G major + B diminished followed by a C major chord has a really fascinating sound to it…

G major + B diminished followed by a C major chord has a really fascinating sound to it
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I have a piece that starts out in A major. With a C natural pedal bass. :D

So, speaking of "clashing notes," what are your favorite examples of two different triads played together?

The "Petrushka chord" is a very famous bichord, C major + F# major creating a crunchy, dissonant sound.

I have some other favorites:

C major + D major. Creates a very "dreamy" feeling because of the Lydian implication.

C minor + Ab major. Equivalent to an AbM7. But when stated as two triads it creates a dissonant, tense feeling.

Taken together with all the posts so far, this is a nice sample of bi-chords – which is interesting for its own sake of being bi-symmetric or not bi-symmetric.

On the background of my Isocord Theory, only major triads superimposed with minor triads (or vice versa) can be really bi-symmetric bichords (or of palindrome nature, as I'd like to call it).

Therefore I like most the so far listed sounds of

C minor + Ab major (Weca)

C major + D minor (if I understood Dev's "I and ii" correctly)

C major + D# minor (Qmwne235)

G major + B minor (if I understood Nicola's "G major with a B minor+5" correctly)

C major + C minor (Heckelphone224, Dev's "I and i")

In a similar way you can build tri-chords as bi-symmetric palindromes, e.g.

F major + C major + G major without its 5

The interval series of all the above listed chords, measured in semitone distances, is as follows:

3-4-1-4-3

4-3-7-3-4

4-3-8-3-4

4-3-9-3-4 (or 4-3-4 in close position)

4-3-5-3-4

4-3-4-3-4 (my tri-chord example in close position)

* * * * *

Addendum of DAI's favorites:

Cmaj7 + Dmaj7 (C,E,G,B,D,F#,A,C#)

[= 4-3-4-3-4-3-4 semitone pattern]

Cmaj7 + Dmaj7 + C#minor (C,E,G,B,D,F#,A,C#,E,G#)

[= 4-3-4-3-4-3-4-3-4 semitone pattern]

Truely imposing bi-symmetries!

I love Cmaj7 + Dmaj7 (C,E,G,B,D,F#,A,C#)

A truely majestic sound.

Also sweet: Cmaj7 + Dmaj7 + C#minor (C,E,G,B,D,F#,A,C#,E,G#)

That + notation is always tricky. I always preferred aug or dim, just for separation from "add"

But... you would never ADD a 5. lol.

G Major + B Minor +5 = Funny, especially when people don't conceptualize it.

E Minor + Ab Dim7 is sexy (E,G,B & Ab,Cb,Ebb[D]), which ends up being E,G,Ab[G#],B,D... or E Minor7 + E Major7... which means Bi-Chord Theory = LOL!!!

Okay. I'm done.

But... you would never ADD a 5. lol.

Well, if it's mentioned, I feel like it's emphasized, like in a power chord or something. Kind of like a 3 showing up in figured bass...

I enjoy C major and E major on top of each other.

Well then what happens when D major walks into the room?

:eyebrow:

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