This is terrific. Absolutely beautiful. So poetic and magical. I love it.

Fabulous conclusion also:

And now he had it still, playing soft and easy notes, that Russandol might sleep and know he was not in that place of un-Music, of clamor and cacophony.

He thought: Is not the world Made of music? Does it not still Shape the world, to play, to sing, with intent and focus?
Oh, YES! This is beautiful. I love that you made Fingon consciously decide to bring a harp along. It adds so much power - and, in the light of the Ainulindale, makes perfect sense in-universe. Loved the conclusion as well.

I really like your answer to the question, the layers of reasoning, the musical texture of the phrasing, and also the concluding paragraph.

(In response to your earlier answer--have you found the box in your profile to tick to receive comment notifications? If that was the issue you were alluding to?)

Oh this is lovely! I love how it draws on the notion of Song, so important to the elves, and so fundamental to creation and the role of song in Tolkien's myth. Lovely!

Oh I love the way this was written! The phrasin was superbly lyrical! I also adore the concept that Fingon would voluntarily use the Music in his favor, especially of chasing the chaos away!