I composed all the music myself in Ableton Live. If you're not familiar with writing music, then you'll want to be looking for royalty free music online. Here's one possible source: https://www.dl-sounds.com/royalty-free/category/game-film/video-game/ If you can't find what you're looking for here, there are countless other royalty free music sites elsewhere online, so it should just be a quick google search away.