The former Jackson Five singer went through the legal process of changing one letter in his last name for "artistic reasons."
Jacksun says the change has nothing to do with a recent rift in his family over the care of Michael Jackson's children and family matriarch Katherine Jackson.
His attorney says Jacksun is in Europe performing with his brothers and told him that he was sure it was "a sunny day in California."
The Associated Press contributed to this report.
