About 그땐 몰랐어 :Groove to the tunes of 그땐 몰랐어 (Ft. 피프레임) with JOOX. Featuring 피프레임, 그땐 몰랐어 was released on and soon took fans by storm. 그땐 몰랐어 consists of 4 songs, and the video of the song is much loved by music fanatics across the country. Download the JOOX App and listen to 그땐 몰랐어 songs online in no time.
