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In page Black Pearl (South Korean group):

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On July 16, 2007, Black Pearl debuted on M! Countdown with their first single "Joheungeol Eotteokhae", with an R&B sound. Later, they released their second digital song called "Gyeor Gug... Neojanha". The group also released the songs "What Should I Do, I Like You" and "Finally...It's You".[citation needed]