"Butterfly" is a dance-pop track with synth-pop elements that showcased Weki Meki's evolving sound. The single was a departure from their debut's more overtly cute concept, hinting at a more mature direction.
- "Butterfly" was released on January 11, 2018, by Fantagio Music.
- The single was a part of their second EP, 'Lucky', which was released on the same day.
- The song features a prominent synth melody and a driving beat characteristic of 2018 K-Pop dance tracks.
Weki Meki is a South Korean girl group formed by Fantagio in 2017. They are known for their bright, youthful image and energetic dance-pop performances. This 2018 single marked their second release as a group, following their debut in August 2017.
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