Click on a button to hear the songs. Common enemies have themes that sound when battling them, and some of them have familiar melodies due to being to the same species.
Nintendo by making Pikmin, and Paper Mario. I used BeepBox to make all the melodies. It is very simple once you get used to it. Here is the link if you want to make your own music!: https://www.beepbox.co Boss Music (Pack 1): https://scratch.mit.edu/projects/944571578/