Balla Onivogui (trumpet player and director) was one of the great figures of Guinea "Authenticité" era, recording first with Orchestre du Jardin de Guinée and then with his group Les Balladins for governement's label Syliphone.
Let's stay around Conakry... This "Musique Sans Paroles" (music without lyrics) LP is not the most representative of Guinean music from the Syliphone state label from the 70s, but one of my favorites.