Born and raised in a conservative Christian home in Orange County, California, Bang started developing his affinity for music and singing in church.
After graduating, Bang attended private Christian institution Biola University,[2][3][4] where he began to post singing videos online such as his cover of Boyz II Men's "It's So Hard To Say Goodbye To Yesterday" that went viral.
Bang signed to Seoul-based boutique record label Feel Ghood Music (home to Korean hip hop pioneers Tiger JK and Yoonmirae, and R&B singer-songwriter BIBI)[8] and made his official solo debut as MRSHLL in June 2017 with two songs – "Circle" and "Home" – on Feel Ghood Music's compilation album, FeelGhood.
In June 2018, Bang released his first EP project Breathe, consisting of 6 songs including the title track "Come Over (featuring pH-1) and the disco dance anthem “Pose”.
In subsequent years, Bang has steadily released singles, mini-albums, and been in campaigns for Instagram, instax, and Converse and penned songs for other artists, such as co-writing Verivery's 2022 title track Undercover and 88rising (with Rich Brian and BIBI, and featuring Warren Hue)'s froyo.