Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Chicago... At its best

My wife had seen this set on TV and so we decided to pick it up here at Amazon. No matter what era of Chicago you love, its all here. From 25 or 6 to 4 to You're the Inspiration... you'll find yourself singing along through this one. This extremely talented group has spread their hits out across several decades, the true sign of musicians who work at their craft.You'll find yourself playing through these discs many times. And that makes the purchase completely worthwhile.