MERRY CHRISTMAS! The bonus final boss theme of R-ACK's v10.0.0. update, which is a "Mega Man X Styled" version of God Badorrer's theme from Brandish 2. Good as a general boss theme or even final bosses if you're looking for something a lot more exciting.
Setting LOOP2 to 1 will enable Zero's theme to "siivagunner" the original melody every second loop. Otherwise, the actual length is 1:09 and will take up 0x0909 bytes with staccato enabled (0x0985 bytes with staccato disabled).
Size of the song on this download page is based on the defines that cause the most space (LOOP2 enabled, Staccato disabled). Size of samples is 0x5DD7 bytes if they aren't already in the game.