Country music singer-songwriter Mark Chesnutt, 60, has revealed hes "recovering" well with the support of his family after undergoing a life-saving quadruple bypass. Chesnutt, known for his iconic hits like "Brother Jukebox" and "Too Cold at Home," needed emergency quadruple bypass surgery after experiencing a heart issue. This specific type of surgery, is also known as a Coronary artery bypass graft surgery CABG, and its a procedure thats done to treat coronary artery disease.