How to delete the GarageBand Sound Library — without using System Settings.

Hello, I was downloading the Garage Band sound library files, and during the installing part, I removed the GarageBand app... But then when I was trying to remove the sound library, most of the sound library wasn't in "Music Creation" but it is in System Data... May I know where to find the GarageBand Sound files, so I can remove them. There are leftovers.