15 GB of instruments you never played: GarageBand's hidden appetite

Updated September 2026 · 6 min read

GarageBand comes pre-installed on every Mac, and most people never open it. Yet it can quietly occupy 5–15 GB of disk space — sometimes more — because of its Sound Library: a collection of instrument samples, loops, and lesson content that downloads in the background.

What the Sound Library contains

GarageBand's Sound Library is a collection of downloadable content packs:

Instrument samples — piano, drums, strings, synthesizers, and more
Apple Loops — pre-made audio loops for building tracks
Lesson content — guitar and piano lessons with audio and video
Drummer kits — advanced drum sound sets

The base app is relatively small (around 1 GB), but downloading the full Sound Library pushes it to 10–15 GB. GarageBand sometimes prompts you to download additional sounds when you first open it — and many people click "Download All" without realizing the size.

Where it lives on disk

Sound Library content is stored in /Library/Audio/Apple Loops and /Library/Application Support/GarageBand. These are system-level folders shared between GarageBand and Logic Pro (if installed).

Your own music projects (if you have any) live in ~/Music/GarageBand.

How to manage the Sound Library

Option 1: Remove individual sound packs

GarageBand lets you manage downloads from within the app:

Open GarageBand.
Go to GarageBand → Sound Library → Download All Available Sounds — but instead, look at the management options.
In GarageBand → Sound Library, you can see what's installed and selectively remove packs you don't use.

If you only use GarageBand for simple recordings (voice memos, podcast edits), you don't need the full instrument collection. Remove the genre-specific loops and lessons you'll never touch.

Option 2: Remove GarageBand entirely

If you don't make music at all, removing GarageBand frees the most space:

Drag GarageBand from the Applications folder to Trash.
The Sound Library content in /Library/Audio/Apple Loops and /Library/Application Support/GarageBand may stay behind. You can remove these folders manually — but only if Logic Pro isn't installed. Logic Pro shares the same audio content.

If you use Logic Pro: do not delete the Apple Loops or GarageBand support folders. Logic Pro relies on the same sound library files. Removing them will break instrument presets in Logic.

Option 3: Prevent future downloads

After cleaning, GarageBand won't re-download sounds unless you explicitly ask it to. But if you reinstall GarageBand (or get a new Mac and restore from backup), it may prompt again. Just decline the download if you don't need the full library.

What about your own music projects?

If you've actually recorded music in GarageBand, your projects live in ~/Music/GarageBand. Each project contains your recordings, MIDI data, and references to the Sound Library instruments you used.

Don't delete projects you care about. Unlike render files, a GarageBand project contains your actual recordings — vocals, guitar tracks, podcast episodes. Export finished projects to audio files (Share → Export Song to Disk) before removing them, and back up anything irreplaceable.

How to check GarageBand's total disk footprint

Open System Settings → General → Storage. GarageBand may appear under "Applications" (the app itself) and its Sound Library may be counted under "System Data" or "Other." To see the full picture, check both the app size and the /Library/Audio folder size in Finder (Go → Go to Folder).

GarageBand is one of several bundled Apple apps that consume more space than expected. For the full picture of what's eating your disk, see our System Data guide.

Sound libraries are your call. Caches are ours.

Gigatidy won't touch GarageBand, your music, or any creative files. It cleans the everyday junk — app caches, logs, system leftovers — that piles up on every Mac.

Meet Gigatidy →

FAQ

Can I reinstall GarageBand sounds later if I need them?

Yes. Open GarageBand and go to Sound Library → Download All Available Sounds. Individual packs can also be downloaded on demand when you select an instrument that requires them.

Will deleting GarageBand affect Logic Pro?

Deleting the GarageBand app itself is fine. But don't delete the shared audio content in /Library/Audio/Apple Loops if Logic Pro is installed — both apps use the same sound files.

Why does GarageBand show as taking only 1 GB but I freed 10 GB by removing it?

The app itself is about 1 GB, but the Sound Library content is stored separately in system-level folders. macOS may not count those in the app's reported size, even though they're only used by GarageBand.