Kim Na-young (Korean: 김나영; born December 31, 1991) is a South Korean singer and actress who gained immense popularity through social media exposure on New Year's Eve 2015, when her single "What If It Was Going" topped Melon's (South Korea's biggest music streaming site) music charts, holding the top place for five days, and high spots on other streaming sites. She has recorded several soundtracks, including "Once Again" for Descendants of the Sun. As a solo artist, she released three studio albums, 26 singles and 22 soundtrack appearances.