Jihyo: “Everyone should listen to the song ‘21:29’. This song was written by all the members together and has a special meaning for us.”

Nayeon: “We really wanted a song that is for our fans. We got so much from ONCE and that’s why we wanted to get together and write a song together to give them a gift. I really liked writing songs together, and I would love to do it again if we have the chance."

Sana: “We always get so much from our fans. We’re always thinking about what our fans will love. When we were planning the new album, we all wanted to respond to fan letters and the love we get from them. This is how ‘21:29’ was born; this is a direct message to our fans. I really want to write a song together with the members again, if possible!”