JTL is a Korean hip hop group, consisting of the ex-H.O.T members who did not stay with SM Entertainment. Though they did not officially break up, they have been inactive for 3 years and the band members are all pursuing solo careers.
There are:
1) Jang Woo Hyuk (장우혁)- Jang Woo Hyuk is the groups bass singer, and is the best rapper of the five, with an abrasive delivery inspired by American hip-hop artists. Along with Hee Jun, he is also one of H.O.T's best dancers. His rap style is known to scream out the lyrics in most of their songs.

Read more about JTL on Last.fm.