Hillsong Church is a Pentecostal megachurch affiliated with Australian Christian Churches (the Australian branch of the Assemblies of God) and located in Sydney, Australia. The church's senior pastors, Brian and Bobbie Houston, began the church in 1983 as the Hills Christian Life Centre in Baulkham Hills. Hills Christian Life Centre later merged with Sydney Christian Life Centre at Waterloo. Over 20,000 people attend services each week. Hillsong Music has topped Australian charts, with albums achieving gold and platinum sales status. Hillsong is known internationally through its teaching, album sales, and the annual Hillsong Conference, which attracts over 28,000 people. The Hillsong Television program is seen in over 160 countries and Hillsong International Leadership College is attended by over 900 students.