Pure Tones of Roshar

The pure tones of Roshar are related to the various types of Light on Roshar (i.e., Lifelight, Stormlight, Towerlight, Voidlight, and Warlight).
There are three pure tones of Roshar.
==Theory==
The ancient human 3-note scale is based on the above tones.
An example of this is "C," "E" and "G." However, this makes a fairly dissonant chord, an augmented triad. This may be intended though, with Odium's tone being the augmented fifth, or the "G" (the most dissonant interval from the root). This is supported by the Sibling calling Odium an 'interloper.' However, if instead the scale of "C," "E" and "G" is natural, and Odium's tone is the third (i.e., "E") with Cultivation and Honor possessing the root and fifth, and this point is compounded by all three lights being able to combine, the end result may not be possible.r/Stormlight Archive comments
===Projection===
In western classical music, C-E-G (all natural) is a major chord, one typically associated with consonance (happiness). A C-augmented triad would have C, up the Major 3rd to E, and up another Major 3rd to a G# (sharp). This leaves you with only consonant intervals between notes, (Major 3rds, minor 6th). The patterning that seems to make the most sense would be Honor and Cultivation having a Perfect 5th between them (which could mean that Towerlight represents a Major/minor chord as readers know them, or a root-5 power chord. Based on how it is described in Rhythm of War, it would likely be a major chord), and Odium's tone would be a diminished 5th (or augmented 4th, same difference) from the lower tone (AKA the tri-tone in the western tradition). This would in turn make it a minor second (one half-step, think the Jaw's Theme) from the fifth. With the C scale example, that would be C natural in the bass, F#, and G natural. So a consonant interval (the Perfect 5th) between Honor and Cultivation, and dissonance between Odium-Cultivation and Odium-Honor. 
This, however, doesn't line up with a secondary theory that the frequencies of tones and light are linked. In that case, the lowest frequency would correlate with Voidlight (violet-UV ~750THz), followed by Stormlight (blue ~630THz), and the highest tone would be Lifelight (green ~590THz). If this is true, then the dissonant tone, the middle one, would be Honor's rather than Odium's.
Perhaps the tones are not truly dissonant, something like a dominant seventh chord (V7) with the root being Honor's, either the third or fifth of the chord making a purely consonant interval with Cultivation, and Odium's tone making up the minor 7th. This would put a dissonant interval between Odium and Honor, and depending on how the chord is inverted the frequencies may line up with the visible spectrum equivalents of each tone.
==Q&A with Brandon==
Q. Is that tone and rhythm stuff universal to the Shards and Investiture elsewhere?
A. The tones can be expanded to other Shards and Invested Arts around the cosmere.
Q. Are the Allomantic pulses a Seeker hears (like drum beats) related to the tones of Preservation, then?
A. Yes, they are.General Reddit 2020, 1/1/20
Q. When Venli attempts to swear her Ideal and it gets denied, she hears "a femalen voice, so very far away - but thrumming with the pure rhythm of Roshar." Is the fact that it says "the pure rhythm of Roshar" instead of "a pure rhythm of Roshar" significant?
A. No.
Q. Was that rhythm set to the tone/tones of the Shard or Shards, and if so, which?
A. RAFO. I want you to be theorizing on that one.YouTube Spoiler Stream 3, 12/16/21
==References==
Category:Magic System