Willie Nelson, the 91-year-old music legend, canceled his concert in Mansfield, Massachusetts, due to illness, despite being cleared by doctors to perform. His son, Lukas Nelson, performed in his place, and fans expressed support and concern for Nelson's health, hoping for his quick recovery. Nelson has faced previous health issues, including emphysema and back problems, leading to tour cancellations in the past. Despite the cancellations, including his most recent show in Mansfield, Nelson is expected to rejoin the Outlaw Music Festival Tour on July 4 in Camden, New Jersey, where Lukas Nelson and other artists will perform his classics.