The entire MGR vocal OST is a release file of the Minecraft resource pack The entire MGR:R vocal OST..I guess, made for Minecraft 1.18.1, 1.18.2, 1.18. It was published on April 11, 2022 and is 10.9 MB in size. For the full description, screenshots and every other version, visit the The entire MGR:R vocal OST..I guess resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.