hiyaa
Is a plugin/mod, i mean it can be installed on a modded server or just a server with plugins and no mods
ive tested it on a spigot/paper server before
I really love this plugin adds a lot of new sounds and ambience to the game it feels really nice with it https://www.spigotmc.org/resources/mambience.65731/
The plugin website redirects you to curseforge wich the download is a mod/plugin