In May 2015, it was revealed that Sistar were coming back at the end of June.[1] On June 2, Sistar released teaser photos through their official Twitter account.[2] Three days after, they released another set of teaser photos and revealed to come back on June 22 with an extended play.[3][4] Four days later, they released another set of teaser photos.[5] On June 11, Sistar confirmed that the title track of their new extended play is called "Shake It", produced byDuble Sidekick who produced their previous title tracks "Give It to Me" and "Loving U", along with an official teaser photo.[6][7] Three days later, Sistar released a second official teaser photo.[8] On the next day, Sistar released another teaser photo.[9] On June 17, Sistar released the official music video teaser for "Shake It".[10]
On June 22, Sistar releasedShake It and its title track of the same name along with its music video.[11] On the following day, Sistar released a dance practice video for "Shake It".[12]
The promotions of title track "Shake It" started on June 25, 2015, onMnet'sM Countdown.[13] The song was also promoted on music showsThe Show,Music Bank,Show! Music Core andInkigayo. On July 2, Sistar won their first trophy award onM Countdown for "Shake It".[14] Their winning streak continued for the first part of July 2015: July 3 onMusic Bank, July 5 onInkigayo, July 8 onShow Champion, and July 10 onMusic Bank.[15][16][17][18]
