Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The Greatest Unknown Blues Band

Johnny Hoy is the real deal and his band is tight and hits the groove like a diamond needle. He has a naturally rich vocal tone and a sense of rhythm in his singing that feels like the old-time, old-school blues. It is amazing to me that some A&R guy hasn't grabbed onto this, but maybe someday. Meanwhile, Johnny keeps pumping it out. Don't let it pass you by.