Imagine the Spider-man theme. Except something about it is off - this is some kind of knockoff, half the instruments aren't tuned or broken, and the musicians are losing the beat because a sickness is spreading through them and they're slowly dying one by one as they play.

All the same, the song they're trying to play is heroic and wants to do the right thing, it's just so battered by hurt and shame that it's not nice to listen to. Also: baby. He's been aged up so his body is adult, but he's only been alive a baby number of years.

There's a baseline underneath it all that's dark, predatory, a separate beast that lurks in the primal instincts of the spider. Like an elemental thing, huge and expansive. This, strangely, is not his possession. His possession is attempting to play the exact same Spider-man song, it's sort of like an echo.