Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Essential listening,

This collection of live, on-the-spot recordings showcase the legendary Fairport Convention like nothing else. They worked seamlessly as a musical ensemble, and Sandy Denny's voice is incredibly moving."Heyday" features songs from the best songwriters of the period: Dylan, Johnny Cash, Leonard Cohen, Richard Farina, Joni Mitchell. The live recording of Dylan's "Percy Song" is gorgeous, and surpasses the studio version in my opinion.