Instruct: Classify Amazon reviews into positive or negative sentiment
Query: At Their Best!

Other reviewers have already raved about this new Battlefield Band album. I'll simply reaffirm their recommendation. Time & Tide ranks close to Leaving Friday Harbor in its instrumental virtuosity. The song texts are perhaps a little less special than those of LFH, but the use of two male singers, each with his own emotional timbre, lends the album a lot of variety. No other group achieves such subtlety with pub songs and work ballads.