NC.A and Koyote's Shinji have gotten together as a duo for the new track "How Much Longer". The two talented vocalists are perfect for the duet ballad, and it's not a surprise why they were chosen for the song.

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NC.A, who recently made some noise on the JTBC show 'Hidden Singer', joined hands with her role-model Shinji. The sorrowful ballad about waiting to get over the one you love is composed and written by Kim Sae Jin.

Check out the song above, and let us know what you think!