Khaya Mthethwa (born 25 November 1987), Umlazi, also known as The PK (The Pastors Kid) is a South African singer-songwriter, musician, composer, arranger, and the multi-instrumentalist.He is best known for winning the 8th season of TV singing competition Idols South Africa, the first black person to have done so.He is also known as a choir member of the gospel group Joyous Celebration, popular both in South Africa across Africa.