Yesterday we reported that Brown Eyed Girls member Narsha would promote a song titled Mamma Mia that features K-pop group Sunny Hill. Now, the track has been released. Sunny Hill is an underrated and co-ed group that made their debut back in 2007 with 3 members. They were directly involved with her new single, as well as appearing in the music video for it. The MV teaser for this track should be released soon, in the mean time check out the track below.