2.5 interval chords?

[wavez]

Really like sound of tritone with that interval. Does they have any other name besides 7-5sus4? How are they usually used and can anybody name some songs where's alot of those?

Thanks!

[jancivil]

I have no idea what you mean by '2.5 interval'. Do you mean stacking two perfect fifths?

[MaliceX]

If you mean II to V, that's called an imperfect cadence. Numerous amounts of pop/emo(Kids' Alternative Rock) songs use that behind ends of verses/bars.

Also, the use of the tritone substitution on top of that, I will have to agree does sound fantastic on it. It's actually something very common in Jazz music.

[llatham]

If you mean II to V, that's called an imperfect cadence. Numerous amounts of pop/emo(Kids' Alternative Rock) songs use that behind ends of verses/bars.

Also, the use of the tritone substitution on top of that, I will have to agree does sound fantastic on it. It's actually something very common in Jazz music.

Cadences:

V-I Perfect (or also called Authentic, most in the US call it Perfect Authentic)

V-vi (or to some chord other than I) Deceptive (sometimes called "evaded").

viio-I Called "Imperfect Authentic" (also, those that use "imperfect" here also call any V-I cadence that's not in root position, or that doesn't have the tonic in the melody at the final chord to be "imperfect" as well).

X-V Half Cadence. I've only hear "imperfect" used for this cadence in much older textbooks. Many authors used to call V-I a Full Close, and X-V a Half Close. Half Cadence is pretty universally understood to be the term for a cadence that ends on V.

IV-I (or anything besides V or viio to I) Plagal Cadence.

Many times, the II-V progressions in pop and Jazz are NOT half cadences - they resolve to I - they do it at the beginning of the next bar though, not at the end of the phrase where you'd normally expect. This is called an "Elided Cadence". Since many pop and Jazz songs "keep going" and don't really "cadence" at the end of a phrase (that is, the melody cadences, but the rest of the music does not) it can be difficult to tell if it's a treu Half Cadence, or an Elided Authentic (V-I) cadence.

The tritone sub replaces V7 with bII7. The progression dm7-Db7-CM7 would be an example of a ii-V-I with a tritone Sub. You'd only TS the ii chord if it was V/V, so, Ab7-G7-CM7, or Ab7-Db7-CM7, etc.

Now, are there ii-bII7 cadences as Half Cadences? That's an interesting concept. I'd have to hear one. In Pop/Rock, doubtful, but in Jazz or more experimental forms of pop/rock, I could see it happening.

Best,
Steve

[llatham]

Really like sound of tritone with that interval. Does they have any other name besides 7-5sus4? How are they usually used and can anybody name some songs where's alot of those?

Thanks!

7sus (or 7sus4) would be like C-F-G-Bb

No tritone.

If by "-5" you mean C-F-Gb-Bb then no, I don't think it's all that common (might be found in some jazz tunes, or experimental music, etc.)

A 7sus4 is often used like so:

D7sus4 - D7 - G.

Play this and you'll hear what I mean. Been around since the Middle Ages.

Many times, 7sus4 chords are simply used in place of a 7 or m7 (since the 3rd is missing from the chord, you can't tell from the chord itself whether it's replacing a 7 or m7 chord (though the context of the piece can imply the correct one)).

HTH,
Steve

[jancivil]

A chord with a mix of perfect and augmented fourths (flat 5ths) or mixing perfect and dim. 5ths, is found quite a bit in Frank Zappa music.

20th century chord, not all that uncommon I think.

try, eg:

B F# C E (G#)

A D# G# C# (E#)

[tapper mike]

The tritone sub replaces V7 with bII7. The progression dm7-Db7-CM7 would be an example of a ii-V-I with a tritone Sub. You'd only TS the ii chord if it was V/V, so, Ab7-G7-CM7, or Ab7-Db7-CM7, etc.

In Jazz I've seen this extended to any chord that contains the tritone from
the Dominant7 (the third and seventh)


G-B-D-F (G7)
Db-F-Ab-B (Db7)
F-B-Db-Ab (Abm6)
D-F-A-B (Dm6)
F diminished

[llatham]

F-B-Db-Ab (Abm6)

Did you mean F-B-Eb-Ab (i.e. Ab-Cb (B)- Eb - F)?

Steve

[llatham]

A chord with a mix of perfect and augmented fourths (flat 5ths) or mixing perfect and dim. 5ths, is found quite a bit in Frank Zappa music.

In addition to many other things.

Also, chords like this are found in much 20th century music and beyond besides Zappa.

Steve

[BertKoor]

Don't you love it when someone comes into a room, talks some pseudo-random jibberish, leaving everyone in confusion, and then just leaves?