The songs are very basic.
Don't be afraid to start the songs with more layers. currently, every song starts with just 1 instrument and then percussion is added later but that causes you to keep the same melody for a lot longer than necessary which makes everything feel repetitive.
The best of the 5 songs was the opening cinematic since it had the most layers and complex rhythms. Specifically, it had a bassline with the guitar which caused it to feel more complete than the rest.