UCLA percussion played this credits to them, this might be my new Megalovania for my new au…. Who knows. In this AU each boss fight gets a percussion instrument. In the boss fight song, it HAS to have the instrument. So like mini boss fights have multiple AUX. instruments (AUX. is short for auxiliary) so like the slap stick for example isn’t being used in boss fight songs, so it’s for monster you defeat or not who knows. Any percussion instrument the boss characters don’t use, it goes to the mini monsters and things. My sans, RESO (Short for resonance), is the marimba, xylophone, and vibraphone. So this has those percussive instruments in the song… duh.