Another RPS referral here- WHAT is that song playing at the end? It sounds like a classical tune but I'm terrible with names. The bosses were pretty fun: A+ chopper battle. I enjoyed the lead-up to it with repeated futile encounters ratcheting up tension before the showdown.
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This: https://dirigogames.bandcamp.com/track/11-badinerie-bach-to-the-future uses bits of this (Bach): https://www.youtube.com/watch?v=Tv40mcAM1ZA :)