Chord Progressions

jdogric12 · Post by **jdogric12** » Sun Oct 01, 2006 5:32 pm

Bob, I think you may be going around your knee to get to your elbow. The combination of G#, B, D, and F gives us G#dim7 (also written G#o7). I choose G# as the root since the bass motion implied here is G to G# to A.

Dim7 chords can be tricky at first. Any dimished 7 chord consists of three stacked minor thirds, thus any inversion is essentially the same chord. It would be 'spelled' differently, though.

If we had B, D, F, Ab (same notes as above) it would be a Bdim7.

D, F, Ab, Cb (still the same notes) comprise a Ddim7.

This week's challenge: How would you spell Fdim7?

telebob · Post by **telebob** » Sun Oct 01, 2006 6:05 pm

Ha! I guess my rudimentary knowledge of theory is showing through. The F implied a 6th to me as I took it from the major scale. I can see now in the context of stacked minor thirds. Not sure how that happens, but I understand how it works now. Thanks.

sloop_john_b · Post by **sloop_john_b** » Sun Oct 01, 2006 6:14 pm

Am13b5! I think if I was reading a chart and I saw that i'd s**t myself out of fear!

J, Fdim7 would be spelled F-Ab-Cb-Eb.

telebob · Post by **telebob** » Mon Oct 02, 2006 5:31 am

Yeah but, did you play the progression? It's a lot of fun to comp over and solo over as well.

jdogric12 · Post by **jdogric12** » Mon Oct 02, 2006 9:26 am

Try again, biscuit boy.

You spelled F half dim7.

sloop_john_b · Post by **sloop_john_b** » Mon Oct 02, 2006 12:15 pm

D'oh!

That should be F-Ab-Cb-Ebb!

jdogric12 · Post by **jdogric12** » Tue Oct 03, 2006 3:12 am

Yes, the doubble flatts are trrickky.

jdogric12 · Post by **jdogric12** » Wed Oct 04, 2006 3:14 pm

JB, I'll up the ante... what chord is this:

A C Eb F#

Spelling counts!

sloop_john_b · Post by **sloop_john_b** » Wed Oct 04, 2006 3:18 pm

My guess is:

Am6b5?

::goes and checks::

sloop_john_b · Post by **sloop_john_b** » Wed Oct 04, 2006 3:23 pm

Well I can't seem to find the answer, so here's my rationale:

A-C-Eb-Gb would be, of course Adim. But, since we've got an F#, spelling counts! F is the 6th scale degree of Am, G is the 7th.

What we have here is an A minor chord with a flatted 5th - the Eb. I am a little thrown off, however, by the F#. Wouldn't the 6th scale degree be F, not F#?

Regardless, I stand by my guess. J?

jdogric12 · Post by **jdogric12** » Wed Oct 04, 2006 5:23 pm

F#o7, 1st inversion.

J Dog's first rule of theory: don't think too much!

J Dog's second rule of theory: don't drink too much!

I frequently break both rules.

sloop_john_b · Post by **sloop_john_b** » Wed Oct 04, 2006 5:39 pm

Oh damn. Wasn't even thinking inversions. Ugh.

johnallg · Post by **johnallg** » Wed Oct 04, 2006 7:07 pm

You two are scary!

sloop_john_b · Post by **sloop_john_b** » Wed Oct 04, 2006 7:10 pm

J, what do you say we devise some sort of theory-related drinking game? You in John?

johnallg · Post by **johnallg** » Wed Oct 04, 2006 7:16 pm

I'd be on the floor in the first round!! I know zilch for theory. I do know the notes are A B C D E F and G. There are sharps and flats. That's it.