Even though GarageBand is free, it must be "purchased" (price $0.00) and linked to an Apple ID.
Even if you find the 10.4 DMG, you will immediately run into a second problem: The Sound Library. garageband 10.4 dmg
When you launch the DMG-installed version, GarageBand will try to download 10+ GB of loops and patches from Apple’s servers. If your Apple ID isn't authenticated properly (which happens with cracked DMGs), the download will fail with an endless "Waiting" message. Even though GarageBand is free, it must be
Pro Tip: If you install 10.4 manually, ensure you are signed into the App Store before launching the app for the first time. If your Apple ID isn't authenticated properly (which
GarageBand 10.4 was released in late 2020 alongside macOS Big Sur. It marked a visual and functional shift to match the "neumorphic" design language of macOS 11.
Key Features in 10.4: