Original: DSP Entertainment replaced with members Goo Hara and Kang Jiyoung , and Kara made their comeback with Rock U , which changed their image '' Hip-hop '' to '' cute '' and '' playful '' .
Simplified: DSP Entertainment replaced members , Goo Hara and Kang Jiyoung , and Kara comeback with Rock U , which changed their image '' Hip-hop '' to '' cute '' and '' playful '' .