Watch San E & Hyolyn's Sensual Collaboration 'Coach Me'

"Coach Me" MV

The K-pop chart-toppers are joined by up-and-coming rapper JooHeon.

It's only a few days into 2015, but it looks like the 2014 trend of K-pop stars teaming up with rappers is continuing on strong.

Throughout the track, Hyolyn cooingly asks a lover to teach her about loving, promising to be "a good girl" if he'll tell her if she's doing things right. The 29-year-old San E agrees to coach her, but adds in playful lines about smacking her feet if she does something wrong. Twenty-year-old JooHoen flies in for an impressive verse where she tells the diva, three years his senior, that he doesn't want to be seen as cute in her eyes and wants her regardless of the age difference.

While the lyrics find Hyolyn in a very submissive position, the accompanying video changes things up and sees Hyolyn in the center of a stage as the MCs vie for her attention.

It's all rather familiar territory for the two superstars: San E's proven to have an ear for all-star female collabos ("A Midsummer Night's Sweetness" featuring After School's Raina was a huge hit and one of Billboard's best K-pop songs of 2014) and rather filthy tracks ("Body Language" is a modern-day sex anthem). "Coach Me" marks Hyolyn's second impressive duet in less than two months (her JooYoung collab "Erase" was also one of the top releases).

Meanwhile, it's very new ground for JooHeon. The rapper is currently participating in a Korean survival singing competition titled No.MERCY where 12 hopeful K-pop stars are battling to be a part of a new boy band; a somewhat similar style to how 2014 chart-toppers WINNER was created, so look out for more from JooHeon in 2015 should he make the final lineup.

SISTAR's official Twitter account tweeted a photo of the trio on the music video set. Check it out below: