He made his musical debut in 2008 as a member of an underground hip hop group called Soul Connection under the alias of "Jepp Blackman".

[citation needed] Bang first began meeting with other members of Soul Connection when he was in his second year of middle school after posting his rap lyrics on an online forum and being recognized for his skill.

In 2010, Bang was contacted by TS Entertainment to be part of a hip-hop idol group after the duo Untouchable recommended him.

[5][6][full citation needed] It topped the Gaon Music Chart and Gaon Digital and Streaming Chart[5] and gained attention for Bang as an artist; following the single's release, he trended on major portal search sites in South Korea[6] and was requested for multiple broadcast appearances.

Bang was the first member to be announced as part of new TS Entertainment boy group B.A.P, of which he acts as the leader and main rapper.

[17][18] The following year, Bang performed at the 2013 SBS Gayo Daejeon as part of a collaborative hip-hop stage featuring Tiger JK, Yoon Mirae, and Bizzy and also including Zico, RM and Eun Jiwon.

[19][full citation needed] On November 27, 2014, it was reported that all B.A.P members had filed a lawsuit against their label to nullify their contracts, claiming unfair conditions and profit distribution.

On October 25, 2016, TS Entertainment revealed that Bang will not be participating in the promotions for B.A.P's upcoming full-length album, Noir, due to anxiety disorders.

On April 25, 2018, Bang released the official music video of his solo instrumental track "Portrait", co-directed alongside Joe Brown.

[21] Following his departure from TS Entertainment, Bang released the MV for single "Hikikomori", a study of his own anxiety and fears facing both the stage and the world itself, with the title taken from the Japanese slang for 'shut-ins' that refuse to go outside due to various stressors.

A MV was filmed for "Ya", but Bang later posted that he had made the decision to "indefinitely postpone" the release due to various factors.

Following up, he released single "Orange Drive" as a gift and message to fans prior to his mandatory enlistment period of 2 years.

[23][full citation needed] On September 2, 2019, Bang announced through Consent that "Something to Talk About", a documentary he had directed in conjunction with producer Kim Jinbeom, had been selected for screening at the 2019 DMZ International Film Festival.

Covering Bang's experiences as a member of B.A.P as well as his creative process when recording "BANGYONGGUK" and featuring interviews with friends and family, "Something to Talk About" is the first documentary to be produced by an idol.

[31] Although his goal was not initially to become a K-pop artist, he was influenced by the roles that Supreme Team and Dynamic Duo played in popularizing the genre in South Korea.

[citation needed] As well as rapping, Bang also acts as a songwriter and producer for many of B.A.P's songs, including all the tracks from their debut EP Warrior[33][34][unreliable source?]

Many of his lyrics openly criticise society, government, companies, and those that take advantage of power or influence to discriminate against others.