GarageBand is a popular music production software that allows users to create, record, and edit audio files. With a user-friendly interface and a wide range of features, GarageBand is perfect for musicians, podcasters, and anyone interested in music production.
Sign into your Apple ID on a friend's Mac running a newer OS and "buy" GarageBand for free. It will then appear in your purchase history on your Catalina machine. Avoid Third-Party Sites: Garageband For Catalina 10.15.7 -FREE- Download