On May 31, Suran held a listening event for her mini-album Walkin.' The vocalist has only released singles and featured on other artists tracks, which makes this her first mini-album since her debut.
At the event, Suran stated, When I first heard [my title track], I found myself relating to the lyrics and think that it will become a song that many individuals will be able to relate to.
Surans title track 1+1=o is a play on words, as the number 1 in Korean can also be understood as work, as the two are written and pronounced the same. Therefore, the song is trying to say that work on top of work will leave you with nothing. RB artist Dean was in charge of producing the track and also features on it.