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    GarageBand User Guide
- Welcome
- 
        
        - Play a lesson
- Choose the input source for your guitar
- Customize the lesson window
- See how well you played a lesson
- Measure your progress over time
- Slow down a lesson
- Change the mix of a lesson
- View full-page music notation
- View glossary topics
- Practice guitar chords
- Tune your guitar in a lesson
- Open lessons in the GarageBand window
- Get additional Learn to Play lessons
- If your lesson doesn’t finish downloading
 
- Touch Bar shortcuts
- Glossary
- Copyright

Lock tracks in GarageBand on Mac
You can lock a track to prevent accidental changes. While a track is locked, you can’t record on it, or edit or create new regions. To edit the track, unlock it, make your changes, then lock it again.
Lock a track
- In GarageBand on Mac, click the Lock button  in the track header. in the track header.- If the Lock button isn’t visible in the track header, choose Track > Track Header > Show Lock Button. - The lock turns green to indicate that the track is locked. 
- To unprotect the track, click the Lock button  again. again.
Lock multiple tracks
- In GarageBand on Mac, click and hold a Lock button  , then drag the pointer up or down. , then drag the pointer up or down.- The Lock buttons of all swiped tracks switch to the same state. 
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