Lee Jung released a teaser for his new single, "I AM SORRY," on September 23rd. It was written by one of Korea's hottest songwriters, Brave Brothers.

Louders Entertainment, which manages Lee Jung, stated, "The teaser is Lee Jung's unique voice sung over a beautiful piano melody, and it will definitely pique your interest."

Lee Jung will be making a comeback unto the music scene after a two and a half year hiatus. The fact that Brave Brothers wrote the song specifically for Lee Jung is already building anticipation for the release of this single. It is scheduled to be released on the September 26.

Meanwhile, Lee Jung hasn't been completely absent from music. Lately he's made appearances on TV programs such as "I'm A Singer" and "Immortal Song." He is currently starring in tvN's "Perfect Singer."