Rajab Abdul Kahali (born 15 March 1994), popularly known by his artist name Harmonize, is a Tanzanian Bongo Flava musician and music entrepreneur. Also sometimes referred to as Konde Boy, Jeshi, Tembo, Mbunge, Konde-Mabeyo. He is well known for his songs “Kwa Ngwaru”, featuring Diamond Platnumz, and “Show Me” featuring Rich Mavoko. In 2017 MTV Base included him in their African edition of “Ones to Watch for 2017”. He was the first artist to sign a recording contract with Diamond Platnumz WCB Wasafi label., and has since gone on to found his own record label, Konde Music Worldwide.
He started his music career in 2011. In 2015, he met Diamond Platnumz and got signed at WCB Wasafi in 2015. His first song “Aiyola” was commercially successful. He won three awards from WatsUp TV, AFRIMMA and AEA USA (in the US).
On February 25, 2019, he released ‘Afro Bongo’. His first EP featuring Diamond Platnumz, Burna Boy, Mr. Eazi and Yemi Alade. Afro Bongo has four tracks including his major hit Kainama which is a track number one from the EP. Kainama’s music video surfaced over 14 million views in 12 months.