Singer Ailee will be presenting the final OST for tvN's 'Alchemy of Souls 2.'

According to tvN's Saturday and Sunday drama 'Alchemy of Souls 2' (directed by Park Joon Hwa, written by Hong Jeong Eun and Hong Mi Ran), the third OST, Ailee's "I'm Sorry", will be released on January 1 at 6:00 PM.

"I'm Sorry" has lyrics detailing the process in which Jin Bu Yeon (played by Go Yoon Jung), who cannot remember her past, and Jang Wook (played by Lee Jae Wook), who does not recognize her, come to know that they are destined for each other. It is a song that has the heartbreaking story melted into the composition of the song.

Music director Nam Hye Seung said, "Ailee's irreplaceable voice perfectly expresses 'I'm Sorry', which captures the melodramatic narrative of the two main characters that penetrate part 1 and part 2 of 'The Alchemy of Souls'."