Don't know, but Schubert is not "Classical". Schubert is a Romantic composer, I don't care how many Sonatas he wrote.
Beethoven is also a Romantic, certainly after op.22, and probably before that. Stupid divisions and categories. You refer to Kasputin as jazz influenced, but I don't hear that, sounds more like Broadway on amphetemines to me, at least the one piece I've heard. But you hear something else. And that's cool, what makes all of this interesting.