Use the "Track Lock" feature (the padlock icon) on completed tracks to freeze them, reducing CPU strain.

If you have downloaded GarageBand at least once in the past using your Apple ID, this is the easiest and safest method. Step-by-Step Instructions: Open the on your Catalina Mac.

If the App Store methods do not work, you can manually install the software using official package files hosted directly on Apple's content delivery networks (CDNs).

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