Power vocalist duo Davichi recently dropped a new song titled "One Person", which was sung for the SBS drama "Smile, Mother". While the song's lyricist and composer, Cho Eun Hee, wanted to make a touching song for the drama, she also wanted to ensure that it would fit Davichi well. It seems that her plans were well-received, as the media is reporting that Davichi's song hit number on the charts, just 24 hours after its release. The�track has also been doing very well on other music charts, and is expected to gain even more popularity. The song will be aired on TV through the "Smile, Mother" episode on March 12th. Source + Photo: Sports Chosun via Daum