Song Eun Yi revealed that there is one rap song by her that has never been released, titled "Forty Three". She explained, "I like how Lee Sang Min raps. I was all prepared and everything; however, Kim Sook held me back so I ended up not releasing the track."

Hearing this, Kim Sook mentioned, "Rapper Beenzino praised Song Eun Yi's rapping skills. He was so amazed that he took off the necklace he was wearing and gave it to Song Eun Yi."