Miranda Lambert on writing sad songs: "You don't have to be tortured to be good."

Country superstar Miranda Lambert is the head of an empire that includes music, a Nashville restaurant, a western wear clothing line and more. She talks about her businesses, her marriage, and the release of her eighth solo album, "Palomino," in a revealing interview with correspondent Lee Cowan for "CBS Sunday Morning," to be broadcast  May 1 on CBS and streamed on Paramount+. 

Lambert first made her mark with her 2005 studio album "Kerosene," and has been one of country music's biggest stars ever since.  In the past two months she was named the Entertainer of the Year at the Academy of Country Music Awards, and then won the Female Video of The Year honor at the CMT Awards.

Her music and her career have changed over time, she said.