Suga

Suga became interested in rap after hearing "Ragga Muffin" by Stony Skunk, stating that it was different from anything he had ever heard before. After hearing Epik High, he decided to become a rapper.

By age 13, he began to write music lyrics and learned about MIDI. He worked a part-time job at a record studio by age 17. From then on, he began composing and arranging music, rapping, and performing. Before being signed, he was active under the name Gloss as an underground rapper. As part of the hip hop crew D-Town in 2010, he produced "518-062", a song commemorating the Gwangju Uprising.

Originally joining the company as a music producer, Suga trained under Big Hit Entertainment for three years alongside bandmates J-Hope and RM. He made his debut as a member of BTS on Mnet's M Countdown with the track "No More Dream" from their debut single album 2 Cool 4 Skool. He has produced and written lyrics for a variety of tracks on all of the band's albums.

Suga wrote and performed the introductory track "Intro: The Most Beautiful Moment in Life" for BTS' third Korean-language extended play (EP) The Most Beautiful Moment in Life, Pt. 1 (2015). Released on April 17, in the form of an animated music video, its lyrics addressed fears associated with reaching adulthood at the end of one's adolescent years through the use of a sports metaphor. Pt. 1's follow up EP, The Most Beautiful Moment in Life, Pt. 2, featured another introduction performed by Suga, called "Intro: Never Mind", that recounted his teenage years. The track preceded the EP on November 15. It was later included as the opener on BTS' 2016 compilation album The Most Beautiful Moment in Life: Young Forever. Suga did not perform another introductory track for BTS until 2020's "Interlude: Shadow", from the band's Map of the Soul: 7 album. Released ahead of the album on January 10, the rap track referenced "Intro: O!RUL8,2?" from the 2013 EP of the same name and discussed BTS' fame, comparing its reality to the celebrity about which O!RUL8,2? dreamed; Tamar Herman of Billboard described the interlude as "evocative, yet brash", noting in particular how its sound changes midway through to show "this dichotomy between the relationship of how fame and audiences watching him affects his idea of self".

Under BTS' name, Suga has released two solo songs. The first was an autobiographical track titled "First Love", that appeared on the band's 2016 studio album Wings. Reminiscent of a monologue, the song is a rap serenade to Suga's childhood piano that personifies his relationship with the instrument as if addressing a friend. The second was "Trivia: Seesaw", about the up-and-down nature of falling in love, which he performed for BTS' 2018 compilation album Love Yourself: Answer.

In 2018, Suga was awarded the fifth-class Hwagwan Order of Cultural Merit, alongside his bandmates, by then President of South Korea Moon Jae-in, for their contributions to the promotion of Korean culture. He was appointed Special Presidential Envoy for Future Generations and Culture by Moon in July 2021, again alongside his bandmates, to help "lead the global agenda for future generations" and "expand South Korea's diplomatic efforts and global standing" in the international community.

Suga released a free self-titled mixtape via SoundCloud on August 15, 2016. He decided against releasing the project as a commercial studio album, describing it as the "feeling of being trapped in some sort of framework." On the record, he discussed his struggles with depression and social phobia, among other topics. Fuse TV rated it one of the top 20 mixtapes of 2016. The following year, Suga composed the song "Wine" for singer Suran, with whom he had previously worked on a song for his mixtape. At Suga's studio, Suran heard a rough draft of "Wine" and asked Suga for the song. The record peaked at number two on the Gaon Digital Chart in South Korea and won the Best R&B genre award at the Melon Music Awards on December 2, 2017. Suga also received the Hot Trend Award for his work on the track. Suga made his first mixtape available on digital download and streaming platforms in February 2018. The reissued project reached number three on Billboard's World Albums Chart, number five on the Heatseekers Albums chart, and number 74 on the Top Album Sales chart in the United States. Suga, as Agust D, reached number 46 on the Emerging Artists chart for the week of March 3.

In January 2019, Suga provided a rap feature on Lee So-ra's single "Song Request". The track was co-written by Suga and Tablo of Epik High, who also produced the track. The single debuted at number three on the Gaon Digital Chart, and number two on Billboard's World Digital Song Sales chart, with 3,000 downloads during the song's first two days of availability. Suga later produced the track "Eternal Sunshine" for Epik High's Sleepless in extended play, which was released in February. He co-wrote and produced the digital single "We Don't Talk Together" for singer Heize, which she released on July 7. In December, American singer-songwriter Halsey released the song "Suga's Interlude", from her third studio album Manic, which both featured and was produced by Suga.

On May 6, 2020, IU released the digital single "Eight" featuring and produced by Suga. The song debuted at number one on both the Gaon Digital and World Digital Song Sales charts. Suga released his second mixtape, D-2, together with the music video for its lead single "Daechwita", on May 22; the single peaked at number 76 on the US Billboard Hot 100. The mixtape debuted at number 11 on the Billboard 200 and became the highest-charting album by a Korean soloist in the US at the time. It also became the first Korean solo release to reach the top 10 in the United Kingdom, opening at number seven on the UK Albums Chart.

In 2021, Suga re-composed Samsung's signature ringtone, "Over The Horizon". The track was unveiled on August 11 as part of Samsung's "Unpacked 2021" event. He also produced the single "You" for Japanese singer ØMI, which was released on October 15. In December, Suga featured on the single "Girl of My Dreams" from American rapper Juice Wrld's posthumous album Fighting Demons. The single debuted at number 29 on the Billboard Hot 100, earning Suga his second entry on the chart as a solo artist. He next co-wrote, produced, and featured on the song "That That" for Psy, which was released on April 29, 2022, as the lead single from the singer's eighth studio album Psy 9th. That December, Suga launched the talk show web series Suchwita on YouTube; he candidly interviews guests over drinks each episode.

Suga was announced as a brand ambassador for Valentino and the face of the Maison Valentino Essentials campaign for the brand's menswear staples in January 2023, and as an ambassador for the NBA in April. His debut solo album D-Day, was released on April 21 under his Agust D alias. Featuring the singles "People Pt. 2" and "Haegeum", the album debuted at number two on the Billboard 200, Suga's first top-10 entry on the ranking, tying him with bandmate Jimin as the highest-charting South Korean solo artists in the history of the chart. A Disney+ documentary, titled Suga: Road to D-Day, chronicling the project's creation and following the rapper on a music road trip across different countries, premiered the same day as the album. Suga also hosted a five-episode radio show, Agust D Radio, weekly on Apple Music in promotion of D-Day; the premiere episode aired on April 17. He embarked on the Suga Agust D Tour, his first solo world tour, the following week, playing several shows in the US, followed by visits to Indonesia, Thailand, Singapore, South Korea, and Japan. On October 6, 2023, Suga's song from Agust D, "The Last" surpassed 100 million streams on Spotify making him the fifth leading Korean artist with the most songs over 100 million streams.

The stage name Suga (슈가) is derived from the first syllables of the term shooting guard (슈팅 가드), the position he played in basketball as a student. He adopted the alias Agust D in 2016 for his mixtape, which is derived from the initials DT for his birthplace, Daegu Town, and "Suga", spelled backwards.