miss A is back, and they've brought quite the storm with them!  Their first official album, "A Class", was released earlier today, and it's already topping the charts. Moments after its release, the song ranked first on nine different real-time charts, including MelOn, Mnet, dosirak, Cyworld, Naver, Bugs, Monkey3, Daum, Soribada, and many others.  Their title track, "Good Bye Baby", retains the sexy, chic image the girls are known for, but with an elegant twist. J.Y. Park tweeted, "Sharing news of miss A making an all-kill on nine different digital music charts ^^" The song itself features a powerful hip hop rhythm with an acoustic shuffle soul feel, and a drum beat that will ring in both your ears and heart. It is definitely an addictive one that's both dramatic and sexy. Representatives of AQ Entertainment said, "miss A's first official album is one that defines miss A's distinctive color. As it is an album that took a long time to prepare, we hope to show an image that will repay the support we've been receiving." miss A's first comeback stage will be held on Mnet's 'M! Countdown' on July 21st!