Instruct: Classify Amazon reviews into positive or negative sentiment
Query: good if you are missing your left arm

the songs barely sounded like the ones they claimed to be. apparently they think we only have one arm since they only put the notes the right arm is doing. its very disappointing. now if you really did only have a right arm, then thats fine, this is the book for you. if you have 2 functional arms then this is annoying. the left arm needs to be trained just as much as the right arm, no sense in only using the right for an entire song