Rajab Abdul Kahali, professionally known by his stage name Harmonize, is a Tanzanian Bongo Flava recording artist, Konde Music Worldwide boss, and entrepreneur.

He was born in southern Tanzania, Mtwara. He started doing music in 2011 and rose to fame in 2015 after met, Diamond Platnumz and signed him to his top-tier record label, WCB Wasafi Records.

In the same year, he released his breakthrough single “Aiyola” which was commercially successful and won him a loyal fanbase of thousands.

Four years later, he released his debut music album named “Afro Bongo” which stores hit songs such as “Kainama” took him internationally and stretched his fanbase. Later, in 2019, he left WCB Wasafi and invented his own record label, Konde Music Worldwide.

He has five music collections, “Afro Bongo”, “Afro East”, “High School” “Made For Us” and his most recent “Visit Bongo” which all showcase his impeccable skills to deliver hits.

From that moment to today, Harmonize has been one of the top-charting music artists in Tanzania and has won multiple music awards – locally and internationally.