Cannot access all songs on rock band 2 cd

[celyfowler]

after completing the first 20 songs on the band quickplay, the rest of the songs won't show up. I don't know how to access the rest of the songs on the CD. Someone suggested that there was a glitch on the cd that won't allow me to access the rest of the songs. I have even tried to "unlock" the other venues, but there are too many combinations and all of them have failed, especially the ones that start with red or circle, as that kicks me backwards. How do I access the rest of the songs after I have completed the first 20 successfully? Shouldn't they just come up automatically?

[Yankee5423]

Tour mode unlocks songs, quickplay does not. I've heard that the "Decades Challenges" in tour are the quickest way to unlock everything.

If you feel the need to cheat to get your songs, the code is:
Red, Yellow, Blue, Red, Red, Blue, Blue, Red, Yellow, Blue
Put this in game modifiers under the extras menu and there you go.

[Finnulf]

The decades challenges in tour is the fastest and best option. If you unlock the songs with the cheat code, you will not be able to play online while that cheat code is enabled - once you unlock it, a check-box is provided.