The original soundtrack of Strategy Game But With a Penguin Who Has a Sword has been released.
The soundtrack includes 3 songs from the game. They are lofi hiphop music with good melodies.
https://store.steampowered.com/app/2899070
The soundtrack has currently a launch discount, and the game happens to be discounted currently too, so it's a good chance to get them both even cheaper with the Game + Soundtrack bundle.
If you want to listen to the soundtrack before deciding to buy it, you can find it on many music streaming services. Then you can get this high-quality DRM-free copy of the soundtrack here on Steam.