Despite multiple offers, Dolly Parton refuses to judge contestants on either 'American Idol' or 'The Voice.' Here's why.

Shows include Gene Simmons, The Stix Trio, Disco Inferno, Frankie Scinta, Lauren Mascitti, Elle Martin Quartet and The Wailers.

From soulful ballads to foot-stomping anthems, country music boasts a rich history and a cast of legendary performers. This ...