HEE Music v1.0 is a release file of the Minecraft resource pack Music for Hardcore Ender Expansion, made for Minecraft 1.7.10. It was published on January 6, 2016 and is 8.8 MB in size. For the full description, screenshots and every other version, visit the Music for Hardcore Ender Expansion resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.