GarageBand/The Big Picture
It's important to understand how each iLife app fits in with the other five. After all, part of iLife's allure is that everything is tightly integrated.
GarageBand is in charge of:
edit- Making songs and podcasts.
- Scoring videos made in iMovie.
GarageBand provides:
edit- iTunes with your own songs.
- iWeb with your own podcasts.
- iMovie with an application to score movies with.
GarageBand relies on:
edit- iPhoto to provide photos for podcasts.
- iMovie to provide movies for scoring.