In between albums, Kelly Clarkson has kept busy by covering Sam Smith, having a baby, and, most important, trying and failing to purchase a ring once owned by Jane Austen. But now she’s back with a new album, Piece by Piece, coming in March, and a new single, “Heartbeat Song,†coming right now! The song adheres to most of the rules for writing a Kelly Clarkson song we established in 2011. Fans of the A-A-A-A rhyme scheme will not be disappointed.