This morning I went from 8 songs away from the "Rock Band 3 Expert Pro Keys Master" goal to only 5 songs away.
Finally got Big Country, Smoke on The Water (which I somehow scored higher on in Hard mode) and This Bastard's Life out of the way.
Now only Rehab, Llama, Antibodies, Roundabout and Freebird still remain. I'm concerned about Antibodies and Freebird because both songs fatigue some old injuries in my wrist. As for Roundabout, I think it's really a matter of dedication and discipline to get that one done. It'll probably still be dead last seeing as how it's the only three star song left on the disc for me. All the rest above are nearly five stars already.
If I am still struggling with Roundabout a year or so from now, I think I might break down and play it two handed.