[13] Additionally, "Sugar Free (Chuckie Remix)", was released on October 7, 2014, and included as part of the limited edition album.

[14] "Sugar Free" is an EDM-inspired track in the Big Room genre characterized by its energetic beats and rap-style melody.

The song was produced by Shinsadong Tiger, who previously collaborated with the group on hit tracks such as "Roly-Poly", "Lovey-Dovey", and "Number 9", alongside Beom & Nang.

[17] According to Financial News, T-ara took a innovative approach for their comeback by embracing the Big Room genre with "Sugar Free", a high-energy style of electronic dance music.

Complemented by a flashy music video featuring vibrant visuals and stylish, on-trend outfits, the comeback captured attention for its modern and distinctive creative direction.

The music video for "Sugar Free" showcases T-ara members in a vibrant club setting, performing symobolic choregraphy that reflects the song's lyrics.

[21] According to Billboard, "Sugar Free" was the third most watched K-pop video globally in September 2014, and the fourth most-watched in the United States, ranking second among girl groups on both charts.

[22] The song also achieved significant success in China, topping YinYueTai's weekly chart, the country’s largest video-streaming platform.

[23] By May 2016, "Sugar Free" had become the second most-watched music videos on YinYueTai, amassing nearly 123 million views, surpassing PSY's "Gangnam Style".

Music Core live stage was described as a "splendid performance", with the outlet praising their engaging choreography and stylish, form-fitting black and white jumpsuits.

7 on NME's list of the best T-ara songs, with the publication highlighting its success in becoming a staple track in clubs across Asia..[37] On February 5, 2016, "Sugar Free" (Big Room Ver.)