Out of curiosity, was there a particular song or two (outside of the expected 'Green Grass') that was a hangup for you? I had trouble with both 'Flirtin' With Disaster' (only song I failed) and 'Suffragette City' (ugh, the unending RG-G-RG-G / YB-Y-YB-Y style rapid-fire notes) on Hard, and I was wondering if there were other potential stumbling blocks on Expert.