Billlie unveiled new teaser images for their upcoming summer single "track by YOON: Patbingsu".

On July 6 KST, Mystic Story took to their Twitter page to unveil 'track Moments #3' teaser images for Billlie's upcoming summer single "Patbingsu". In the group image, the Billlie members wore uniform outfits of jeans and a white T-shirt, reminding many of the commercials that took place back in the early 2000s. In particular, Billlie gathered interest with their outstanding visuals as they perfectly pulled off the retro concept.

In the individual cuts, the Billlie members exuded more of their unique charms through their natural and refreshing beauty, further raising anticipation for their upcoming summer single "track by YOON: Patbingsu".

Meanwhile, "track by YOON: Patbingsu", a collaboration project between Billlie and Mystic Story's producer/singer Yoon Jong Shin, will be released through various music platforms on July 14 at 6PM KST.