So Cool (Sistar album)

Release and promotion

So Cool was released on August 9, 2011 through Starship Entertainment and LOEN Entertainment in South Korea physically and digitally and worldwide for digital download. Promotions for the album started on August 11, in KBS's Music Bank. The girls also promoted on MBC's Music Core, SBS's Inkigayo and Mnet's M! Countdown. The song "Girls Do It" was the first promotional single of the album. After one month of promotions, on September 11, the group won a mutizen for the song "So Cool", on the show Inkigayo for the win the group released "Follow Me" as second single of the album. On September 23, the girls performed the title song in a remix version until September 25. The promotions of the song ended on October 2, in the special episode "Save the Green Earth" of Inkigayo.

Controversy

One day after the release of the album and music video, Starship Entertainment made some changes in the choreography of the title song "So Cool" to avoid controversies. The song "Girls Do It" was deemed inappropriate for broadcast due to a seemingly-offensive line. "Girls Do It" was set for the album's fifth single, however due to the controversy that followed the track, promotions were cancelled. The girls released "Hot Place" in its place.

"Push Push"

"Push Push" is Sistar's debut single, released on June 3, 2010. The official music video was unveiled on the same day. The song was written and produced by Brave Brothers, as were the two B-sides, "Here We Come" and "Oh Baby". "Push Push" was first performed on Music Bank on June 4. The single debuted at number 9 on South Korea's Gaon Singles Chart, and it reached number 59 on the Gaon 2010 digital yearly charts with 1,779,327 copies sold. It was also number 28 on the Gaon Album Chart.

"Shady Girl"

"Shady Girl" is the group's second single, released on August 25, 2010 and produced by Brave Brothers. The official music video was unveiled on the same day, and features Super Junior's Kim Heechul. The single also includes the songs "Drop the Beat" (feat. B2K) and "I Don't Want a Weak Man". "Shady Girl" was first performed on Music Bank on August 27. The single debuted at number 4 on South Korea's Gaon Singles Chart, and it reached number 79 on the Gaon 2010 digital yearly charts with 1,623,243 copies sold. It was also number 9 on the Gaon Album Chart.

"How Dare You"

The group's third single, "How Dare You", was released December 3, 2010. It was written and produced by Brave Brothers, as were the two B-sides, "Mighty Sistar" and "Over". "How Dare You" is a mix of English and Korean, and contains the title of the song in the refrain: "Baby-baby-baby-baby-baby Ni kkajitge mwonde? (니 까짓게 뭔데)". Sistar first performed the song on Music Bank on December 3. On December 9, Sistar released rehearsal videos for "Over" and "How Dare You", and their homepage crashed due to congestion. On December 17, they won their first music show award on Music Bank for "How Dare You". The song debuted at number 2 on South Korea's Gaon Singles Chart and the single debuted at number 8 on the Gaon Album Chart on December 3.

"So Cool"

"So Cool" is Sistar's fourth single, released with the album on August 9, 2011. The official music video was unveiled on the same day. The music video depicts the girls in various glamorous outfits with the scenes changing between the four walking a fashion runway, backstage pampering up, and running track in pompous dresses. It also features the hip hop trio DJ DOC. The song debuted at number 1 on South Korea's Gaon Singles Chart.