The song was written and composed by the singer herself as special release for her first Korean tour.

[2] The single was released in conjunction with the singer's first solo concert tour in South Korea.

[5] Korea JoongAng Daily remarked that the song carries a "sophisticated melody" and BoA's vocals are "appealing [and] distinctive".

[1] A Japanese version of the song was released as the B-side to her 33rd Japanese single "Tail of Hope" as "Baby You...", however the Korean version also released on the same single was titled as "Sonna Kimi".

[6] The music video for the song was filmed in early January 2013 and directed by BoA's older brother, Kwon Soon Wook.