Wonder Girls (Hangul: 원더걸스) was a South Korean girl group which consisted of Yeeun (HA:TFELT), Yubin (유빈), Hyerim (혜림) and Sunmi (선미) in its final lineup. Their producer and manager was singer-songwriter Park Jin-Young, and the Wonder Girls were signed to his talent agency JYP Entertainment. Each of the five original members were selected through auditions. Debuting in early 2007, they became popular in the fall of that year with the song "Tell Me.