Brian Mumba Kasoka Bwembya known professionally as B Flow (B'Flow or B-Flow), is a Zambian musician, media personality, humanitarian, philanthropist, social justice advocate,[6] and founder of Music For Change.

He served as Chairperson of the HIV/AIDS and Social Commentary (HASC) committee of the Zambia Association of Musicians (ZAM) from 2014 to 2017, before being elected to the position of Publicity Secretary in 2018.

[7] He is the global ambassador in the fight against HIV/AIDS for American organization AIDS Healthcare Foundation (AHF)[6] and also the first Zambian artist in the world to launch an album at a US Embassy.

[4] In November 2016, the United Nations Population Fund (UNFPA) named B Flow as one of the 16 voices of activism against gender-based violence around the world.

[8][9][10] Bwembya was born in Kabwe and raised by his grandmother Matilda Chiti-Byrne and his mother Mirriam Mulenga Mumba Byrne, a policewoman.

At 8, he and his friends played a small band by turning pots and buckets into drums and making Banjos(non-electric guitars) using tins, planks and strings.

During his 10 Grade at Kabwe High School Brian joined the Anti-AIDS/Drug Club the same year, where he actively participated in quiz and singing.

In 3rd term of Grade 10, Brian was elected vice president [6] for the Anti-AIDS/Drug Club because of his dedication to counselling his fellow pupils who used to smoke Marijuana and drink alcohol.

He was later trained by the Kabwe Adventist Family Health Institute (KAFHI) and the Students Partnership Worldwide (SPW) as a peer educator.

His club won a number of quiz & talent competitions(Music, Drama and Poetry) on AIDS & Drug awareness in central province.

Whilst in University, B Flow was selected for a Peer Educators' training, sponsored by the Society For Family Health(SFH) in 2008.

He also had the privilege to share the stage with international artists such as Brick & Lace, Oliver Mtukuzi, P-Square and Jah Cure.

So Brian uses music to advocate against things like gender based violence and educate youths on HIV / AIDS .

[28] During the program United States President Barack Obama addressed over 700 young Africans and [26] US officials and made a speech in which he endorsed B Flow [27][29] for his excellent work in using his music to advocate against gender based violence and educating youth on HIV/AIDS.

Obama's Young African Leaders Initiative (YALI), also awarded B Flow a highly competitive Professional Development Experience (PDE) to work in the American music industry with US company, Okayafrica, in New York.