After School has definitely gone through many changes during the year of 2009 as they brought on UEE as a new member in the first half of the year while they lost SoYoung in the second half. Many missed SoYoung after a year of strong hit singles like Ah! and Diva, but newcomer replacements Reina and Nana made a strong impression with the fans. Now with its new members, After School starts off the new year as they return with their chart topping single Because of You on New Year's Day. But it was a pity that they couldn't get into the top 3 of K-Chart in the new year since they had been up there in the closing weeks of 2009.