Ailee lends her voice for the song 'Day by Day', the main OST of drama 'Triangle'

Drama 'Triangle' has recruited Ailee for a song on their OST!

She is the voice behind the main theme song, which is called "Haru Haru" aka "Day By Day", which you may have already heard in the previous episodes of the show.

The sorrowful emotions of the lyrics come alive through Ailee's voice, so make sure to check it out above, and catch 'Triangle' every Monday and Tuesday!