Hi, I was wondering if any teachers could help me but I am not sure what exactly is the difference between grade 1 and grade 2 pieces? I can guess correctly but if you ask me why, or to be specific, I'd wouldn't be sure. My teacher had asked me to analyze the difference between grade 1 & 2 pieces. (I have to choose 2 similar pieces of technical difficulty of same kind). Just wondering but what do you teachers count as a grade 1 and another a grade 2 piece? Thanks!