Wow, just wow.
No wonder why this game took 5 years to make.
And also, go here.
Then download the Org Maker 2 English Translation, open it, then load the lastbt3.org file from your Cave Story folder and mute the the non-percussion sounds.
As shown here:
Enjoy!
My little brother does music stuff and I got him to make a remix containing a couple assorted songs from Cave Story and Undertale, here. He doesn't do message boards so he told me it'd be cool to just post it here to try and get some feedback. So, feedback's appreciated.
[EDIT] Figured we'll...