Bring combat to life with battle music!

Features

By default, 22 soundtracks from Minecraft Dungeons, Legends, and Story Mode are added to the game.
Four of these have already been implemented:

The music will also shift upwards in pitch when your health is low to add an extra rush of intensity in those dire moments! This is highly configurable too, for any pack developers looking to tweak how the feature works.

Mod Support

Also comes pre-packaged with support for numerous mods, including but not limited to:

• L_Ender's Cataclysm (Replaces their provided OST)
• Twilight Forest
• Mowzie's Mobs (Uses their provided OST composed by Rotch Gwylt)
• Alex's Mobs
• Alex's Caves (Replaces their provided OST for the Luxtructosaurus)
• Iron's Spells & Spellbooks (Incomplete)
• Bosses of Mass Destruction
• Aether (Disables in favor of their boss music)
• Mutant Monsters

Any mods that have their OST replaced can be set back to their own OST by putting the sound ID to said OST in the config file instead of the one I have set by default. 

Modpack Developers

Using the configuration file, you can add your own custom battle music to any mob in-game. There's also an option to provide default battle music for all hostile entities in the game!
See below for a preview:

# Entites and their respective songs, write in entity;song;priority format       
#    > entity = the entity's ID, eg. "minecraft:pig"       
#    > song = the song's ID, eg. "battlemusic:mini1"       
#    > priority = what precedence this song takes over other entity's music, 
#      eg. a priority of 1 will fade out and play over a priority of 0.      
entities_songs = ["somemod:someentity;battlemusic:redstone_monstrosity;3",  "minecraft:husk;battlemusic:kermetic;1"]

# A generic battle song to play for any other undefined hostile entity      
#    > Leave blank for no default battle music       
default_song = "battlemusic:mini1"