Power Chord Theory

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Perfect 4ths also sound pretty good with distortion. Pretty sure it’s the way distortion replicates frequency intervals across the spectrum. Could probably sort it out in a day or two with some fourier analysis.

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Funnily enough, a 3 string powerchord contains that interval.

If you take a C powerchord you have C to G (the fifth) and G to C (the fourth). Played together the G and C are actually an inverted C5 chord used in many songs such as Smoke on the Water.

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You have hit upon a connection between all interval types there @dave.pritchard101

An inverted 5th = a 4th (and vice versa).

An inverted 3rd = a 6th (and vice versa).

Can you see you simple mathematical sum that would allow you to know the inversion for any interval?

Cheers :blush:
| Richard_close2u | JustinGuitar Official Guide & Moderator

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I didn’t think of it as an inversion makes sense though.

A 5th plays well because its wave frequency is 3:2 of the fundamental. This is the “nicest” ratio after 2:1 (an octave), and it means that the wave of the fundamental and of the 5th constructively interfere after only 2 wavelengths of the root (or 3 wavelenght of the 5th)

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There are some folk in the community who understand and appreciate the fundamental physics of wave motion. Thanks for the extra info @Armi

Cheers :smiley:
| Richard_close2u | Community Moderator, Official Guide, JustinGuitar Approved Teacher

I have enough to worry about playing power chords never mind the theory behind them!

@Richard_close2u You’re welcome! I love the fundamental aspects of music because this is the reason why, as well as math, this language is universal and the same concepts were achieved independently throughout history

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