Seo In-guk is a South Korean singer and acter. In 2009, he appeared on Mnet's audition program "Superstar K" and won, and in October of the same year, he released his debut song "Call Your Name" and topped the music chart. Starting with a supporting role in KBS drama "Love Rain" in 2012, he became a popular actor as Yoon Yoon-je in tvN's original drama "Reply 1997," and was recognized as an entertainer who caught both singers and actors. He continues to show his passion for music by participating in OST and releasing his own songs.