Xdinary Heroes has been announced as part of the fourth lineup for 'Sound Planet Festival 2026,' which was revealed on the 22nd through the official social media accounts of Sound Planet Festival and Rolling Hall. The new lineup includes four acts: Xdinary Heroes, Red C, Japanese band akuruyo-sheep, and singer-songwriter Joha. Xdinary Heroes performed on both days at last year's Sound Planet Festival and left a strong impression on audiences, presenting a special collaborative stage with YB, one of South Korea's leading rock bands, which was notable for its rare and distinctive set. CEO Kim Cheon-seong stated, "This edition of Sound Planet Festival will be a celebration where various genres and talented musicians come together to provide enjoyment for everyone."