Sung Si-kyung is a South Korean singer and television host. He has released eight studio albums in Korean and two studio albums in Japanese. His most popular songs include 거리에서, 두 사람, and Every Moment of You. Sung Si-kyung has appeared on the variety shows 2 Days & 1 Night and Non-Summit, the television program Duet Song Festival, and hosted The Voice of Korea in 2020.