Kesha postponed her upcoming tour dates due to “doctors orders.” The 30-year-old “Tik Tok” songstress took to her Instagram on Tuesday, February 20th to share that she will “undergo surgery to repair a torn ACL.” The Grammy nominated performer is also set to join Macklemore on a 30-show tour in North America this summer, called “The Adventures of Kesha and Macklemore." Recently, Kesha took the stage at the 2018 Grammys to perform a moving rendition of her song “Praying,” which was inspired by her alleged abuse by music producer Dr. Luke.