There are three different categories. Lead Guitar, Guitar Battle and Bass/Rythm. You complete each of those modes. For each mode you will earn a different song.
You beat all of the songs in that venue (getting 3 stars at minimum...) Once you beat all of the venues and career modes,(lead guitar, bass guitar, guitar duel) you get the last 3 bonus songs.
just beat guitar duals to unlock them
Some.
No, you cannot unlock the songs with a cheat.
it should be in the bonus songs in your songs list and i think you unlock it in co-op play. hope i helped
go to the Bonus Songs section
I don't think you can.
Only in Multiplayer.
Not.
•You can unlock one of them by completing a Career mode. •Another is unlocked by completing two different Career modes. •The last is unlocked by completing three different Career modes.
No. Only a Unlock All Songs cheat exists.
You have to unlock it by playing other songs first or get the cheat code to unlock all the songs.