2PM In 2008, he participated in
Mnet's
Hot Blood Men, a program that chronicles the rigorous training of thirteen aspiring trainees, all vying for a coveted spot in the boy band
One Day. This initiative ultimately led to the formation of two distinct boy bands, namely
2AM and
2PM. Half a year following the televised airing of
Hot Blood Men, the group
2PM made their debut with the release of their inaugural single
"10 Out of 10" from their first single album titled
Hottest Time of the Day. However, it was their second single album,
2:00PM Time For Change, that propelled them to mainstream success in Korean music, solidifying their meteoric rise. As of 2021, the group has released seven studio albums in Korea and five studio albums in Japan. Jang has written and composed several songs for the group, including "Make It", the title track of their seventh studio album,
Must. In 2022, Jang held a joint fan-concert with bandmate
Jun. K titled
115430 in Seoul on April 30 and May 1, with the latter show also being streamed online via
Beyond Live. He has also participated in activities of the unofficial 2PM sub-unit ENWJ with Jun. K and
Nichkhun, holding events and concerts with the group since 2023.
Solo work On May 24, 2012, JYP Entertainment announced that Jang would release his debut solo album in early July. On June 28, he performed the two of the album's tracks at the Mnet 20's Choice Awards: "2Nite" and title track "Sexy Lady". The EP, titled
23, Male, Single, was released on July 8 and included two songs composed and written by fellow 2PM members
Jun. K and
Lee Jun-ho. The EP peaked at number two on the
Gaon Weekly Album Chart and stayed on the chart for six consecutive weeks. In December 2013, Jang collaborated with 125 artists including his bandmates
Jun. K,
Nichkhun, and
Hwang Chan-sung for a single titled "You Are a Miracle" for the
2013 SBS Gayo Daejeon, the proceeds of which were donated to charity. In 2014, Jang released two duets: "Two Hands Intertwined" (깍지 낀 두 손) with
Park Se-young as part of the
MBC variety show
We Got Married and "Fireflies' Glow" (반딧불을 따라서) with indie singer Lel. Jang made his solo debut in Japan on March 4, 2015 with the single album , while concurrently holding a concert tour with the same name with nine shows in Tokyo, Osaka, and Nagoya from February 19 to March 11. On April 20, he released a Korean version of the single album, which peaked at number four on the Gaon Albums Chart and stayed on the chart for six consecutive weeks. and
Mada Boku Wa... (まだ僕は・・・; Still Here...) on October 11. Both mini-albums peaked at number two on the Oricon Weekly Albums Chart. In addition, both EPs were released in the midst of a solo Japanese concert tour: Party Shots from April 5–30, which ended on his birthday, and Mada Boku Wa... (まだ僕は・・・; Still Here...) from September 29 to December 6, which ended with two concerts at the
Nippon Budokan. On October 11, Jang released the single "Still Here" (똑같지 뭐), a Korean version of the title track "Mada Boku Wa..." (まだ僕は・・・; Still Here...) from the EP of the same name. On January 15, 2018, Jang released his second Korean EP titled , which included Korean versions of two songs from his Japanese EP
Party Shots, "Going Going" and "Party Shots". During his week-long promotions for the mini-album, he performed "Don't Act" and title track "Quit" (뚝) on TV music programs.
Bye peaked at number four on the Gaon Albums Chart and stayed on the chart for four weeks. An episode of the MBC show
Song One – The Song of My Life featuring Jang as a guest aired on September 30, 2018, having been filmed prior to his enlistment for his
mandatory military service. In the episode, Jang performed a cover of the 2003 song "Think About' Chu" by
Korean indie band Asoto Union; the cover version was released as a digital single the next day. In 2023, as part of a project for the variety show
Beat Coin, Jang collaborated with his castmates on the song "Never", written and composed by Rado of
Black Eyed Pilseung. Later that year, he collaborated with
BtoB's
Seo Eun-kwang and their team of contestants from the TV show '''' on a cover of BtoB's song "Naviety". On June 7, 2023, Jang released his third Japanese EP titled
Off the Record, which consisted of five tracks including a title track of the same name, while holding a solo concert tour with the same name from May 24 to June 11 with five dates in four cities: Fukuoka, Yokohama, Tokyo, and Osaka. In 2024, he held his first solo fan meetings titled Be Young in Seoul on August 3–4, Busan on September 28–29, Osaka on December 14–15, and Yokohama on December 21. On June 23, 2025, Jang released a digital single titled "Simple Dance", his first solo Korean release in seven years. He released his third Korean EP titled ''I'm Into
with the title track "Think Too Much" featuring rapper Damini on September 15 and held a concert titled Half Half in Seoul on September 27–28. In commemoration of the tenth of his anniversary of his debut as a solo artist in Japan, he released his first compilation album titled 3650.zip'', with two new tracks: "Reason" and a cover of the self-composed song "Yo Moriagatte Yo" (Yo モリアガッテ Yo), originally released by his former labelmates
Got7. In conjunction with the release, he brought his Half Half concert series in Tokyo on November 29–30 and Kobe on December 27–28. He also held a Half Half concert in Taipei on March 8, 2026, marking his first concert as a solo artist in Taiwan.
Television career Jang and fellow 2PM member
Ok Taec-yeon hosted
SBS's music show
Inkigayo with actress
Ha Yeon-joo from July 2009 to January 2010 and with
f(x)'s
Sulli from February 2010 to July 2010. From February 2, 2010 to August 3, 2010, he starred as an assistant MC on
Kim Seung-woo's
KBS talk show '''' alongside
Girls' Generation's
Taeyeon. In 2014, he was paired with actress
Park Se-young as a couple for nine months during the
fourth season of MBC's
We Got Married. In 2021, he was a fixed panelist on the
eighth season of
I Can See Your Voice after previously appearing as a guest in the third and fifth seasons.
and . He rejoined the cast and production team of Beat Coin
on a successor show titled Screwballs
, which began airing on Netflix on February 23, 2025. and the interview web series Should We Meet Up Today?
on Billboard
Korea'
s YouTube channel. Later that year, he was cast as a co-host for the KBS2 dating show Mind the Noona Gap''.
Acting Jang debuted as an
actor in the 2011 KBS
teen drama Dream High, in which he played the role of Jason, a Korean-American. In preparation for the role, he studied English with the help of his bandmates Taecyeon and Nichkhun, both of whom had previously lived in the United States. His on-screen romance with co-star
IU garnered attention, with the two being nominated for the Best Couple Award at the
2011 KBS Drama Awards. In September 2011, Jang and
Dream High co-star
Suzy made a cameo appearance in an ending credits scene of the KBS drama special
Human Casino, playing the role of a couple caught up in gambling scandals. In December 2013, he appeared in the short film
The Miracle, a parody of popular TV series with a cast made up entirely of K-pop idols, which aired during the 2013
SBS Gayo Daejeon. ==Personal life==