Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Rock's door to Jazz

My first listen to this album was not an easy listen. The second much the same. The third time blew me away. From that moment on I realised that there was something else to listen to than Atomic Rooster or Emerson Lake and Palmer. Now I have Soft Machines 1,2,3,4,5,6,7 Bundles,Softs and Land of Cocayne. None of these resemble the other. They're all good.