Miss A's Min, 4minute's HyunA, Wonder Girls, 2AM, 2PM, Bumkey, and others promoted singer Rhythmking's new song.

Today, Min, HyunA, and Wonder Girls posted on their Twitter a picture of a smiling mouth with the words 'rhythmking' on it, arousing curiosity.

Rhythmking is a new rising producer widely known among musicians for his variety of music activities. The pictures that artists have been posing on their Twitter was of his new song, "Think About You."

Photo Credit: rhythmking