GarageBand makes it easy to add your own original audio score to your iMovie projects. You can add songs, Apple Loops, and voiceover audio tracks while watching your iMovie from within GarageBand.
- Open GarageBand and create a new Music Project.
- Save the project to your GarageBand projects. Use the default options for tempo, signature, and key.
- Click Create. The GarageBand project opens, but it needs to be customized to show the elements necessary to create a musical score.
- Choose Control > Show Loop Browser. You’ll use Apple Loops as the primary building block for your score. Apple Loops, prerecorded music files, can be used to add drum beats, rhythm elements, and other repeating patterns to a project.