Let’s be real: Dolly Parton is not a rock singer. Nor — as her much-hyped head-banger makeover on “Rockstar” demonstrates — does she have any business making a “rock” album.

Dolly Parton was inducted into the Rock & Roll Hall of Fame over the weekend. To accept the honor (and perform her first rock song), she dressed the part, wearing head-to-toe leather. She had ...