Adjust the guitar's level on the Apogee Duet 2, or in the Apogee Maestro 2 software.
GarageBand: May unexpectedly quit when changing input level in Learn To Play guitar lessons
When adjusting the input level in Learn To Play guitar lessons, GarageBand may unexpectedly quit if you are using an Apogee Duet 2.
This document will be updated as more information becomes available.
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