March. Dalinar had always found the death song the most beautiful of all he had heard from the Parshendi. It seemed to cut through the grunts, clangs, and screams of the nearby battle. As always, each Parshendi’s song was in perfect time with that of his fellows. It was as if they could all hear the same melody somewhere far away, and sang along through sputtering, bloodied lips, with rasping breath.
What is it they hear? Is it the hum of Roshar itself? Or is it something else? We know that the island of Patgee is a Shard. We have that from WOB. Can a planet be a Shard perhaps? Odium has not always been in the Rosharian system.
I honestly no longer think that the different Rhythms are indicative of the different Shards that seem to accompany the different kinds of light. Maybe the surges, or the magic the people accssess in this system are a combination of Investiture. Maybe Roshar itself is like a pestle. Thrumming with Rhythms. The Singers hear many different ones. They attune certain Rhythms to use the different Forms.
The humans cannot hear as many Rhythms as the Parsendi do. So it is according to which Rythms the budding Radient can hear that determines which Spren they attract. Certain Personality types hear or "attune" to certain Rhythms.
That is why Moash and Renarin later bond different types of Spren. Lift also is different. Not certain what exactly is up with her. Can turn a crust of bread into Investiture. That is some of Conservation's doing. We also cannot forget Venli. The Singer\Listener who has a Nahel Bond with Timbre. Timbre is a Light Spren. These Spren do not represent a bond with Odium.
Venli has a Nahel Bond AND is bonded with a Form of Power Spren. She seems to have the ability to access two different types of Investiture. Both Voidlight and Stormlight.
So if this line of thought is accurate then the different types of light are the direct Investiture that are granted by living Shards. Maybe Roshar itself is like the Dor on Sel. The Elantrians access it by using the AonDor. But on the same planet we see it tapped with ChayShan, and the Dakhor. Shai uses Forgery and is kept imprisoned by a Blood Mage. Who uses Bloodsealing.
On Scadrial the different ways of using Investiture is more obvious. Allomantic, which has at least 16 subsets. Feruchemy same 16, at least. And Hemalurgy. Which we now know can use Trellium as well as all 16 other Metallic forms of Investiture. (I assume Harmonium can be used in this manner as well.) We have yet to see another full Mistborn in Era two and nobody has clearly used Allomancy to burn Trellium or Harmonium but I fail to see how it isn't a very likely possibility. Although Harmonium goes Boom so...
Using those systems as an example then is it so far out there to see how Rhythm or Music is how the different facets of the different Shards in the Rosharien galaxy are used?
By the way. I know Odium and The Stormfather say Honor is dead. But I ain't convinced that the Shard is shattered. But that is a different rabbit hole.
