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).
Kei (singer) Kim Ji-yeon (; born March 20, 1995), commonly known by her stage name Kei, is a South Korean singer and actress. She made her debut as a main vocalist of South Korean girl group Lovelyz in 2014. She made her acting debut as the female lead in the web drama "Matching! Boys Archery" in 2016.