Complex sentence: After a year-long hiatus, TVXQ returned as a duo with remaining members Yunho and Changmin, and they released TVXQ's fifth Korean album "Keep Your Head Down" (2011), topping album charts in most major Asian markets upon release.
Split into simpler sentences: After a year-long hiatus, TVXQ returned as a duo with remaining members Yunho and Changmin. They released TVXQ's fifth Korean album "Keep Your Head Down" (2011), topping album charts in most major Asian markets upon release.