Winter Flower , South Korean female singer Younha’s collaborative song with BTS ’ RM, topped iTunes singles charts in 43 countries on January 7, her management agency said. The first track of Younha’s new album, “Unstable Mindset”, released on January 6, made her the first South Korean female soloist to top the US iTunes Top Song chart as the track sat atop the iTunes singles charts in 43 countries and regions, according to C9 Entertainment. 5 reasons RM is the most interesting member of BTS Including the 43 countries, the iTunes singles charts from a total of 70 nations and regions had the Younha-RM song listed in their top-10 lists, according to C9. The collaboration came after the two artists’ years of friendship. “RM and I used to talk about collaborating many years ago … but I have been unable to suggest [anything] … and [with the new album], I officially requested [making a song together],” Younha said in a press release a day earlier, referring to her joint work with RM. Are BTS really suing Bit Hit over ‘sharing revenue’? RM is known to be a dedicated fan of Younha, supporting and recommending her music. Upon the release of Younha’s new album on Monday, BTS uploaded a captured image of Younha’s new album jacket on its official Twitter account, throwing support behind her music featuring RM. #WINTERFLOWER #RM pic.twitter.com/d74w6ELJVl — 방탄소년단 (@BTS_twt) January 6, 2020 Black Cloud , the title track of “Unstable Mindset”, had also topped single charts of local music streaming service providers, including Genie Music and Soribada, as of January 7. Want more stories like this? Sign up here . Follow STYLE on Facebook , Instagram , YouTube and Twitter . This article was originally written by Yonhap for The Korea Times .