During 'Kim Shin Young's Hope Song at Noon' on April 26, Jonghyun talked about his collaboration with Taeyeon and revealed, "It's a track that was targeted for Taeyeon noona. She tends to look bright while also having a gloomy vibe. I believed those qualities would melt well into the track."
Jonghyun continued, "I write the melody and the lyrics at the same time. I worked on the track imagining Taeyeon noona singing the part. I felt sorry asking her (for featuring) because noona's part was so big but I'm really thankful that she happily accepted."