Which singer is known for their single "Beautiful" featuring the South Korean rapper Zico?
Zico (rapper) Woo Ji-ho (Korean: 우지호; born September 14, 1992), widely known by his stage name, Zico (Korean: ), is a South Korean rapper, producer, singer-songwriter and leader of the boy group Block B, signed under the label Seven Seasons. He has released two solo albums, "Gallery" (2015) and "Television" (2017).
Lee Soo-jung Crystal Yi, better known as Lee Soo-jung and Chai (born in 1993) is an American singer of Korean descent who is currently signed under Antenna Music. She was the winner of SBS's K-pop Star 5 in 2016.