'Flower Crew', which was aired live via the 'V' app on October 17, featured Heechul as a special guest.
On the show, Heechul said, "I've met Yoo Byung Jae once, I wanted to meet Ahn Jung Hwang, and I've wanted to meet Lee Jae Jin because my older sister is a Sechskies fan."
He continued, "I still remember Double J's (Lee Jae Jin's group after Sechskies) performances," and demonstrated singing the song. He added, "My sister was a huge fan. She watched you every single day."