It's been a while, but rookie girl group Leader's is finally making their debut on M! Countdown today after releasing their debut single album,�"Please", back in March. Comprised of members Cindy, Yeonshil, Serin, Dahae, Seolji, Yesol, and Chaeyool, the group chose their name with hopes of becoming trend-setting leaders of the Korean music industry. Their debut single consists of two tracks, "Please" and "Hope", both of which keep auto-tune to a bare minimum in order to express their natural vocal talents. With a strong drum beat, an addictive rap and chorus, and stylish choreography, the girls revealed that they're ready to make their mark. Check out their debut stage below!