Country star Billy Ray Cyrus and his wife, actress and producer Tish Cyrus, are separating again after nearly 30 years of marriage.

Tish filed for divorce from the "Achy Breaky Heart" crooner in Williamson County, Tenn. last week, citing "irreconcilable differences" and noting that she and her husband have already been living separately for more than two years, according to PEOPLE.