Gold Instruments
Description: unlock a golden form of any of the 4 instruments (guitar, bass, drums, and mic),

How to: Beat Solo Mode on any difficulty you choose. You must also use the instrument you intend on unlocking in beating Solo Mode, so that if, for example , you wanted to unlock the Golden Drums, you should use the Drums in Solo Mode.

Silver Instruments
Description: unlock a silver form of any of the 4 instruments (guitar, bass, drums, and mic),

How to: Beat Bonus Tour Mode on any difficulty you choose. You must also use the instrument you intend on unlocking in beating Bonus Tour Mode, so that if, for example, you wanted to unlock the Silver Drums, you should use the drums in Bonus Tour Mode.

Transparent Instruments
Description: Unlock the "transparent" series of instruments (which gives you a transparent bass, guitar, drum kit and microphone)
How to unlock: Enter the Hall of Fame on that instrument. So, if you want the transparent bass, enter the Hall of Fame as a bassist.

Gold Fender Stratocaster
How to unlock: Complete Solo Tour mode with the guitar.

Silver Fender Stratocaster
How to unlock: Complete the Bonus Tour option on Solo Tour with the guitar.

All Songs
Wwant to unlock every song in the game (which disables the ability to save)?
How to unlock: Go to the game's Title Screen and insert the following code on any instrument:
Red, Yellow, Blue, Red, Red, Blue, Blue, Red, Yellow, Blue

Gold Microphone
How to unlock: You need to score a million points or more in Solo Tour.

Singing in the mic with out saying the words!!!!!!
When you are singing and dont know the words you can say either anywords you want or you can humm it but as long as you stay in tune with the notes!

Play guitar without strumming!!!!!!!
When you play the giutar do bass then go to hard or expert. then when theres a lot of orange you play like medium with your left hand but you use your right hand to do orange! tip: you have to use the lower frett buttons)

zakk

Do u whant to unlock every song? then type the following on any instrument! ok?!?!?!?!?
RED YELLOW BLUE RED RED BLUE BLUE RED YELLOW BLUE

Nlock all
R,b,y,y,r,b,r

Guitar hero guitar in rock band
Just plug in the GH guitar and it should work you can use it as the bass or guitar

Talky Parts (Microphone)
If you can't hit all of the talky part words, just blow into the mic. It works, I've tried it!