I did some quick calculations on the use of the flash drive.

20 songs per set X 4 sets = read 80 times minimum in an evening.

80 times 4 days per week = 240 times

240 times 52 weeks = 12480 times.

This is not counting the times used to program and save registrations, changes made to the registrations, practice time etc.

Better have a backup with you at all times.

Jerry