MAMAMOO's Solar will be releasing an original soundtrack, "Dun Dun Dun," for the drama 'Kill Heel.'

"Dun Dun Dun" had been partially released through the ending of the 7th episode of the drama. It received much attention as it left a strong impression with its dark heavy music.

The rhythmic guitar and addictive melodies accompanied by Solar's sensual singing voice creates an exciting beat and a trendy, sophisticated sound suitable for the current mood of the drama. In addition, the song further adds a sense of immersion to the drama highlighting the conflict and tension that is shown in 'Kill Heel.'

This song was written by Seol Gi Tae, music director of 'Kill Heel' and music director of various dramas such as 'Uncle,' 'Mouse,' 'Partners for Justice 2,' 'Love Affair In The Afternoon,' 'The Rebel,' and more.

Meanwhile, Solar's  "Dun Dun Dun" will be released on various music sites on April 7 at 6 PM KST.