C418 - Subwoofer Lullaby [hal1] | Minecraft — In-game Music Minecraft — In-game Music YouTube• Oct 19, 2020
The "hal" prefix in the file name is an internal categorization used by developers, alongside others like "calm," "nuance," and "piano," to help the game engine identify and trigger different styles of background music. minecraft_in_game_music_hal1
You can listen to the full version of Subwoofer Lullaby here: C418 - Subwoofer Lullaby [hal1] | Minecraft —