2021 KBS Song Festival

On November 26, it was announced that Astro's Cha Eun-woo, AOA's Seolhyun and SF9's Rowoon would be hosting this year's festival and the date of the festival will be on December 17.^[2]

On December 3, it was revealed that Red Velvet, Oh My Girl, Kang Daniel, The Boyz, Stray Kids, Itzy, TXT, Enhypen, Aespa, and Lee Mu-jin would be part of the first line-up. On December 8, it was announced that Seventeen, Sunmi, NU'EST, Astro, Brave Girls, NCT, SF9, Kim Woo-seok, STAYC, and Ive will be part of the second line-up.^[3]

On December 13, KBS released a video featuring several artists dancing and singing a song that encourages everyone to tune in to the festival. The video features TXT's Soobin and Huening Kai, Stray Kids's Felix, Oh My Girl's Hyojung and Arin, NCT's Shotaro, Brave Girls's Minyoung and Eunji, Enhypen's Sunghoon and Ni-Ki, Aespa's Ningning, Ive's Wonyoung and Leeseo, SF9's Jaeyoon and Youngbin, Kang Daniel, and STAYC's Seeun and Yoon. The song is a parody of Baby Shark.^[4]

• The Beginning
• Backstage – Oh My Girl's Arin, TXT's Choi Soo-bin, Ive's Jang Won-young and Enhypen's Sunghoon
• Main Event – Astro's Cha Eun-woo, AOA's Seolhyun, and SF9's Rowoon

The following individuals and groups, listed in order of appearance or performed musical numbers.