This is inspired by a fanfic I've recently read, but unfortunately I've forgotten the name of it
Elrond and Elros have just been captured and because they are tiny and terrified, Maglor has sung them to sleep, keeping them close as he himself nods off, near a warming fire. While they sleep, Maedhros keeps vigil, brushing a strand of hair from his only remaining brother's face.
I always waver between crying a river or melting with the amount of fluff in this part of the story. It's a pity it's only a couple of sentences long in the Silmarillion