going along with the percy being connected with the sirens headcanon thing
its not charmspeak in the way piper has (though love the idea that it makes percy slightly immune to her charmspeak anyways), and it isnt really hypnotizing either.
but its his singing. it's why he intentionally sounds bad when around the campfire, never singing for real. instead when he's actually singing, his voice is so soft and powerful and stabs needles straight into listeners hearts.
there's nothing necessarily manipulative or mind controly about it, but depending on the song it drives such a sense of wanting and longing and nostalgia and yearning into anyone listening.
it almost always ends with everyone else in tears that he normally avoids it all together.













