How do you unlock the bonus songs in Guitar Hero On Tour?

Beat all the medium songs in guitar duel. So far I have only seen one bonus song, so i think there is only one.

i haven't done it myself yet so it might not be true, but apparently there is 4 more songs to unlock. if you get

* 5 stars on i don't wanna stop on all difficulties,

* get 5 stars on knock me down on all difficulties,

* complete every song on every difficulty with band name master p in career mode, * and get 5 stars on every song in expert i think. these will all take a bit of practice though so good luck. the guitar duel one above, i don[t thinik it matters which difficulty you do so llong as you manage to complete all the songs I have done these, they do work.