Music:
Stage 1, Stage 2, Boss 1, Boss 3 => Great, I want to listen more and more.
Stage 3 - I think the melody is pretty solid, but the instruments could sound better? I wonder if it's to invoke some feeeling, but the main trumpet is too shaky, I think it could grow on me.
Boss 2 - Sounds pretty retro I think? It's really dissonant, almost like a NES/Famicom tune, the melodic segment is good but the rest, not so sure.
I can't wait for the rest of the soundtrack.