The lead single, "You Drive Me Crazy" (너 때문에 미쳐, Neo Ttaemune Michyeo), was penned by singer-songwriter Wheesung, with music by Cho Young-soo and Kim Tae-hyun.  Robbie Daw of Idolator drew comparisons to American singer Britney Spears, commenting: "the "Womanizer" beat, the "If U Seek Amy" melody and the wardrobe that looks like it was stolen from the storage unit housing the ". . . Baby One More Time" video shoot memorabilia. [. . . ] You know, the line "you empower me, sexy shadow" is simply just not used enough in pop songs these days. So props for that, T-ara. " Filming for the music video, directed by Cha Eun-taek, began on February 18, 2010, in a Namyangju, Gyeonggi studio. Member Ji-yeon suffered a knee ligament injury during its production, causing the other members to end their solo shoots with Ji-yeon finishing hers the next morning.  "You Drive me Crazy" peaked at number one on the Gaon Digital Chart; holding its position for two weeks, it sold 3 million copies by the end of 2010 and ranked at number sixteen on the annual chart.