Successfully complete the indicated task to unlock the corresponding instrument:

Gold drum kit: Successfully complete Solo Tour mode on drums.
Gold Fender American Deluxe Stratocaster HSS guitar: Successfully complete 
Solo Tour mode on guitar.
Gold Fender bass: Successfully complete Solo Tour mode on bass.
Gold microphone: Successfully complete Solo Tour mode on vocals.
Silver drum kit: Successfully complete the Bonus Tour in Solo Tour mode on 
drums.
Silver Fender American Deluxe Stratocaster HSS guitar: Successfully complete 
the Bonus Tour in Solo Tour mode on guitar.
Silver Fender bass: Successfully complete the Bonus Tour in Solo Tour mode on 
bass.
Silver microphone: Successfully complete the Bonus Tour in Solo Tour mode on 
vocals.
Transparent drum kit: Reach the Hall Of Fame on drums.
Transparent Fender Bass: Reach the Hall Of Fame on bass.
Transparent Fender American Deluxe Stratocaster HSS: Reach the Hall Of Fame on 
guitar.
Transparent microphone: Reach the Hall Of Fame on vocals.