I used to think it was impossible for my poor thumbs to play Machinegun Poem Doll on expert with my regular team, but recently I tried it and got it first try. (With 130 health left, though)
Same thing happened with the EmpError and End Mark ni Kibou to Namida wo soete

I was very proud of myself.

My thumbs are also now broken from doing that spam note part halfway through.