Of course they say it often in interviews, that were influenced by Kassav who had a huge succes in Francophone Africa during the 80s, filling stadiums when they came (themselves being surpised the way they were loved in Africa). Their succes was so big, that it created a genre in Angola called Kizomba, that was inspired by their musicstyle (Zouk).
There are many songs who have Zouk-parts, a part of Eve Sukali (Wenge Musica), a part of Amie Reviens (Extra Musica), a part of La Vie (Wenge Musica), the whole song of Overdose (Papa Wemba), Experience (Koffi Olomide), Douceur (Mbilia Bel), there are alot of songs like that.