K-Pop's 10 Best Idol Group Debuts

10. B.A.P - Warrior


9. SHINee - Replay


8. MAMAMOO - Mr. Ambiguous


7. 2AM - This Song


6. SNSD - Into the New World


5. CNBlue - I'm a Loner


4. TVXQ - Hug


3. Miss A - Bad Girl Good Girl


2. 2NE1 - Fire


1. Ladies Code - Bad Girl