14 DAY TRIAL // Apple has a comprehensive guide for GarageBand fans looking to re-download their music lessons, in case the transfer was interrupted or if the user has deleted the files.
If you’ve started to download one or more Learn to Play Artist Lessons and the download has been interrupted, Apple says you may easily resume the download from the Lesson Store in GarageBand.
As for previously downloaded Artist Lessons, these may be downloaded again, free of charge, from the Apple Store. Re-downloads cannot be initiated in the Lesson Store in GarageBand, Apple says.
Support document HT5226 has instructions on how to “resume an interrupted Learn to Play Artist Lesson download,” as well as on how to “download a purchased Learn to Play Artist Lesson again later.”
Visit Apple here for the guide.