Jump into danger, Koopas beware;
our powerful plumber's leading us there!
This is Fighting with All of Our Might from Shovel Knight, the song that plays during the boss fights against the wandering travelers. It's a perfect song for intense boss battles.
Edit: Fixed a note release not lining up and lowered global volume. The insert size is also a bit less.
Edit (again): Optimized some things. Thanks to brickblock369 for your feedback and optimization tips!