Muzik was released as the second single from 4minute's first mini album, For Muzik. The song
peaked at #2 on the charts and some sources estimate its sales at over 3.2 million.
왜 이러니 (aka Wae Ireoni or, What's Wrong? / Why Are You Being Like This?) was released by
T-ARA as the lead single from their first mini album, Temptastic. The single reached #4 on the
Gaon chart and sold over 1 million copies.