Background and career
Rajabu Abdulkahali Ibrahim (born 15 March 1994 in Mtwara, Tanzania), known professionally as Harmonize, is a Tanzanian singer, songwriter and entrepreneur. He first emerged on the national music scene in 2015 with his debut single "Aiyola" after signing with WCB Wasafi, the record label founded by Diamond Platnumz — he was the first artist to sign a recording contract with the label.
Harmonize left WCB Wasafi at the end of 2019 and founded his own record label, Konde Music Worldwide, earning the nickname "Konde Boy". He released the EP Afro Bongo in 2019, followed by his debut studio album Afro East (2020) and High School (2021), blending Bongo Flava, Afropop and Afrobeats. His best-known songs include "Kwa Ngwaru", "Uno" and "Aiyola", and he has collaborated with Burna Boy, Yemi Alade, Ruger, Sarkodie and Naira Marley, winning awards from AFRIMMA, WatsUp TV and AEA USA.

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