TAHITI has lent their vocals for the KBS 2TV drama 'You're the Best Lee Soon Shin's OST!

TAHITI sings the track "Don't Know, Don't Know", which supposedly serves to encourage the love line between IU and Jo Jung Suk.

Although TAHITI might not be the first girl group you might think of when it comes to OSTs as they're still a rookie group, it turns out this effort comes as a thoughtful act of support for Jo Jung Suk, who is in the same agency as the girls!

Stay tuned for the release of "Don't Know, Don't Know".

In the meantime, listen to a preview of the song below.