Semba is a traditional type of music from Angola. Semba comes from the singular Masemba, meaning “a touch of the bellies”, a move that characterizes the Semba dance. Brazilian samba is believed to have originated in Angola, where it’s known as “semba”. The two are very similar. Angolan semba was danced to celebrate different occasions and is known as the music of the sea.
The subject matter of Semba is often a cautionary tale or story regarding day-to-day life and social events and activities, usually sung in a witty rhetoric. Through Semba music, the artist is able to convey a broad spectrum of emotions. It is this characteristic that has made Semba the premiere style of music for a wide variety of Angolan social gatherings. Its versatility is evident in its inevitable presence at funerals and, on the other hand, many Angolan parties.
Source: https://wanderwisdom.com/travel-destinations/Facts-About-Angola, https://en.wikipedia.org/wiki/Semba