Brian has collaborated with many artists from China and South Korea such as Chungha, Keith Ape, Jackson Wang, and Jae Park.

He discovered YouTube after he got a Rubik's Cube and realized he could log onto his parents' computer to find strategies for solving it faster.

[13] He also taught himself to speak English by watching YouTube videos and by listening to rappers like Childish Gambino, 2 Chainz, Macklemore and Tyler, the Creator.

[14] Brian began listening to hip hop music in 2012, when an American friend he knew on the internet introduced him to "Thrift Shop" by Macklemore & Ryan Lewis.

[15] Brian began to explore the genre, discovering Drake, 2 Chainz, Kanye West and Logic at first.

Brian wrote his first rap song in 2014 and recorded it onto an iPhone microphone over an MF Doom produced instrumental.

[16] Brian originally wanted to become a cinematographer in Los Angeles, however he gave up the aspiration once his music career began taking off.

[17] Brian began his career under the name Rich Chigga and released his debut track, titled "Living the Dream" on 17 July 2015, on his YouTube account.

[21] "Dat Stick" track caught international success after 88rising released a reaction video featuring American rappers Ghostface Killah, 21 Savage, Tory Lanez, MadeinTYO, Desiigner, and many more.

[24] He then released a remix of his debut single "Dat Stick" which features rappers Ghostface Killah and Pouya.

[25] Brian later released his third single "Seventeen" which quickly surpassed the one million hits mark on both YouTube and SoundCloud.

[37][38] On 19 December 2017, Brian announced on the social media platform Twitter that he was releasing his debut studio album titled, Amen.

Brian later went on and appeared on a single and music video with Kris Wu, Joji, Trippie Redd and Baauer titled, "18" on 16 January.

[53][54] The seven-track EP was preceded with three singles with accompanying music videos: "Don't Care", "Love in my Pocket" and "DOA".

On 18 October 2023, Brian released a single titled "World Stop Tuning", featuring Warren Hue.

[62] Brian's musical style has been called "ironic" by UrbanDaddy though it "eventually transcends itself to become a legitimate piece of art.

In an interview with Complex Magazine, he states that his album "The Sailor" is an "important step forward for his art" and he is beginning to "write about things that are deeply personal to him.

Adding to the lyrical attitude aspect, he is honest in his music and talks about his life experience with a simple and repetitive riff which is also "catchy and groovy."

Brian has cited Young Thug, Tyler, the Creator, Yung Lean, Childish Gambino and Project Pop as inspirations.

Brian also competed in the 2×2 event at the Jakarta Ceria Open in October 2010, there he finished 28th out of 67 with a best solve of 5.68 seconds.