Is the spyro 2 soundtrack copyrighted? And if so by who? I got a claim on the autumn plains song, and im pretty certain it's false.
Youtube's system often (incorrectly) flags the Autumn Plains music, it's a pretty common thing. You could file a counter-notice I suppose, but as you probably know YT is pretty shitty with that kind of thing.
That's a common issue, and it's because each homeworld music in Spyro 2 is licensed from outside sources (ie; it wasn't written by Insomniac specifically for use in-game). I have seen Summer Forest and Winter Tundra get flagged in previous videos but normally it's Autumn Plains during Gulp skip, since that's when things like sound effects and commentary tend to get quiet.
Like Dact said: you could try to appeal it but there's not much hope.
Just ignore it, it really doesn't your channel any harm unless you are monetizing from the speedrun videos, as long as you don't monetize from the videos it really isn't worth going through their very liable service.
It also happens in Jacques however it was because the Jacques music was part of The Stewart Copeland Anthology, however, again, just ignore it.