They said in a statement, "This subgroup will aim to grab the attention of fans with all aspects of music, performance, and fashion styles.".

[3] The single "Twinkle" was ranked number 14 on David Bevan's list of top 20 K-pop songs of 2012 for Spin.

[14] The song is a dance-pop track with influences of funk, electropop and go-go, drawing inspiration from music during the 1970s and 1980s, specifically that of Stevie Wonder.

[15] It starts off with Taeyeon, Tiffany, and Seohyun getting out of a car with the instrumental of "OMG" (Oh My God) playing in the background, whilst a large amount of paparazzi are taking photos as they greet and smile to the cameras.

When it parts, Seohyun is on the building's roof, with a grand piano and a lit-up sign saying "Girls' Generation Twinkle" behind her.

Tiffany and Taeyeon descend down the stairs on either side before it cuts to them with their backup dancers on the roof and on the stage.

As the song finishes, "안녕" (Goodbye, Hello) starts playing, and the video cuts back to the paparazzi outside, who react when one of the front doors open, assuming it's one of the girls.

In an interview with Joon Park and Brian Joo on October 3, 2024, Tiffany shared that she directed the music video.