Complex sentence: His last appearance was on May 3,2003, at the New Orleans Jazz and Heritage Festival and he died less than two months later on July 1,2003 at the age of 73, after a long battle with prostate cancer.
Split into simpler sentences: His last appearance was on May 3,2003, at the New Orleans Jazz and Heritage Festival at age 73. He died at the age of 73 on July 1,2003, after a long battle with prostate cancer.