She'll be working with singer-songwriter Letterflow for a springtime song called "Perfect". She's had a springtime song before in "Some", her duet with JungGiGo, so this is sure to be another amazing song.
Letterflow's label said, "The song 'Perfect', which will be released on March 23, is by Vanillaman, the leader of Vanilla Acoustic, who's well known for being Bolppalgan4's producer. It's a sweet love song that talks about the feelings of a man and woman in love. The lovely lyrics and sweet melody fit perfectly with Soyu and Letterflow's voices."
The song will be released at 6PM KST!