SMDMusic.zip is a release file of the Minecraft resource pack SMD Music, made for Minecraft 1.20.1. It was published on November 3, 2023 and is 82 MB in size. For the full description, screenshots and every other version, visit the SMD Music resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.
