Subject to change.
My favourite coin inserted jingle: Ironclad. Because Neo-Geo.
My favourite first stage theme: Touhou 11: Subterranean Animism - The Dark Blowhole. I played it only once back then, yet that melody got stuck in my head.
My favourite stage theme: Resogun - Decima. Every time I play it, I look forward to reaching the third stage specifically for this.
My favourite last stage theme: G-Darius - Kimera II. Zuntata tried to be epic, and succeeded with flying colors.
My favourite boss theme: Undecided
My favourite Stage Clear theme: Darius II/Sagaia - Stage Clear. *clap clap*
My favourite final boss theme: Undecided
My favourite menu/intro theme: DoDonPachi Daifukkatsu Black Label - Sally. I let the timer run out every time, because I can't get enough of it.
My favourite ending/ranking: Undecided
Weird how my favorite parts of any game, that is final bosses and their themes, are currently an empty space on this list.