They were supposed to be singing with him, but he later said he was unsure if they would sing the first or second chorus so he got confused (and the fans were singing too fast) 😂
Ohhh I absolutely loved the little snippets when I heard it, nice compilation. Its not included here but there was also that 1234 song of FT from United Shadows that Ike sung along with Hongki because it was his favorite song. ♥