HomeForumsGuitar InstructorsSpeed Kills 2 – Lesson 23

This topic contains 3 replies, has 2 voices, and was last updated by  Doug Marks 2 months, 2 weeks ago.

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  • #22252

    j dogg39
    Participant

    Lesson 23 tabs for an A Diminished arpeggio, I believe, actually show a G# Diminshed arpeggio. Am I wrong?

  • #22259

    Doug Marks
    Keymaster

    The fundamental tone or root of any diminished seventh chord, being composed of three stacked minor thirds, is ambiguous. For example, Cdim7 in root position: C + E + G + Bdouble flat (each has one and half interval), is just as easily viewed as an Edim7 in its third inversion:

    Ddouble flat (enharmonic equivalent of C) + E + G + Bdouble flat.

    It can also be viewed as a Gdim7 in its second inversion:

    Ddouble flat + Fdouble flat (enharmonic equivalent of E) + G + Bdouble flat.

    Delineating this chord in its last possibility, that of Bdouble flatdim7 in its first inversion, is very clumsy and not very useful as it requires the use a triple-flatted note, something that is hardly ever used in a musical score:

    Ddouble flat + Fdouble flat + Atriple flat (enharmonic equivalent of G) + Bdouble flat.

    ** Note

    I copied this from Wikipedia (https://en.wikipedia.org/wiki/Diminished_seventh_chord) this is because I want you to think I’m smart. I would have just said that “The G# Diminished arpeggio is actually 3 or 4 different Diminished arpeggios depending on the number of notes in the arpeggio. That’s because each can be viewed as the root note of a diminished 7th arpeggio. Because of the chord’s symmetrical nature (superimposing more minor thirds on top of the dim7produces no new notes), there are only three different diminished seventh chords possible.”  Because I still want you to think I’m smart I also copied the last sentence from Wikipedia.

    Metal Method Guitar Instructor

  • #22269

    j dogg39
    Participant

    As I started to read this post I thought, “Wow! Doug is like a music Vulcan!” I am thankful for the explanation.

  • #22272

    Doug Marks
    Keymaster

    Yeah, I shouldn’t have tipped you off. It would be cool to be viewed as a Vulcan or even Rain Man.

    Metal Method Guitar Instructor

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