If you have any headcanons to share about ArSen characters (either canon or your OCs) and singing, I'd love to hear! :)
Aaaaaaaa I think I got a couple! Hold up lemme try to recall them:
When Isfan is doing something, he tends to hum soft lil tunes absently. Is it a particular song? Ehh, not really. Literally just no thoughts head empty just random tunes.
Zaravant whistles a lot. I don't know why I hc him that way.
Shapur has sung lullabies to soothe a smol Isfan countless times. Perhaps even every night. It helps little Isfan sleep, and calm down after nightmares.
I somehow can't get the mental image of Daryun singing something with an evil grin and Narsus trying to shut it out being all “STOOOOP YOU MONSTER”. I don't know what Daryun would be singing to get Narsus to react like that, but it's clear he's doing it on purpose to mess with Narsus.
Isfan tends to find a melody in nature— like say, the slow pitter-patter of raindrops, some frog croaking in the distance, stuff like that. His innate connection with nature also meant that he can feel out its melody. He thinks everyone else can do it too though. Oh and sometimes his humming can be influenced by whatever he hears out there in nature.
Merlaine appreciates a good singing voice. Maybe he'd prefer softer, quieter songs, perhaps to contrast his father's (very bad) loud boisterous singing voice?
Alfarīd likes to sing, and dance too. If there's a celebration or something she'd be one of the people dancing to the joy. I think she'd make quite a merry dancer, can't tell you why though.
I think Arslan would like to sing and dance too, but is too shy to do it, afraid people might think it's improper. Somebody should push him to do it.
Sam has a nice voice, but he often doesn't know what to sing so he just doesn't. What a waste!
It's been a very long time since Hilmes sang. He last did it for Irina, perhaps under the excuse of teaching her about Parsian music or something, lol. I think a smol Hilmes before the fire may have expressed interest in picking up an instrument or something. It's just the vibes I got.
Irina looooooves music. She sings and hums a lot too, and makes cute lil noises. She always asks Militsa to sing for her, and who'd say no to a face like that?
Ayyar always pesters his grandpa to sing for him. And he always sings along too.
In Winds of Wolfsong, the clan has so. many. things. centered around song and dance. Solstices and equinoxes? Let's sing and dance! Many of their history and myths? Songs! Celebration? Song! Funeral? Song! There are games played by families or just bored colleagues where they piece random songs together or come up with lyrics on the fly or stuff like that. Just... songs.
On that note, music is thought to be the bridge between worlds, the language of all languages that transcend barriers. It's used as a medium to communicate with spirits, and they have traditional dances— dances to old and ancient melodies endeavoring to sync up the body and soul to what the song is conveying, if that makes sense? It's also a form of magic. Not every clan member is a dancer, though.
Kazai's a dancer. Arslan is too. Gieve sings, and plays the oud as in canon, but with a magical twist of course. Maybe he too uses it to ask spirits questions. Ayunnen and Kashi used to sing together under the moonlight. In this AU too Farangis sings and chants melodic prayers— just not to the Parsian gods. Isfan sings a lot more in this AU too.
Ayunnen had the gentlest, most soothing voice you've probably ever heard. Kashi's voice was... hm, how do I describe it— stronger? firmer? Something like that.
Shapur seems like someone who'd sing for his beloved.
So this seems to be all I can recall at the top of my head for now! I hope you enjoyed it!!