Somin explained, "I'm very timid so my parents were worried. I started going to a dance school to change my personality and I auditioned for my current label through the dance school. "
Jiwoo also revealed, "I was majoring in classic but I got the courage the audition for my current label. On the night I auditioned, they told me to come back and I recorded 'Oh NaNa'. It wasn't the official recording but it still felt unreal."