Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Carl Perkins Review

Carl Perkins was one the best early rockers. Had he not been injured when Elvis released Blue Suede Shoes, his version might have been more popular. But, he was unable to make appearances to publicize it. I believe Carl Perkins never recovered from that. And, I think he never got the kind of recognition he deserved, even though he was elected to the Hall of Fame.