Luambo Luanzo Makiadi". During this time, vocalist Mayaula Mayoni came on board, along with guitarists Mpundi Decca, Gege Mangaya, Michelino Mavatiku Visi and Thierry Mantuika. Franco then appointed Simaro Lutumba, as the chef d'orchestre. Sam Mangwana composed his hit Luka Mobali Moko around this time. In 1973 Josky Kiambukuta Londa, a seasoned composer and vocalist, joined the band. In 1974, Youlou Mabiala returned to TPOK Jazz. However, Sam Mangwana left and started a solo career in Cote d'Ivoire. Ndombe Opetum was recruited from Afrisa International to replace Mangwana. He came along with hornsman Empompo Loway. In 1975 Franco released yet another classic hit Bomba Bomba Mabe. 1976–1979 By the mid-1970s Franco was one of Zaire's wealthiest citizens. He invested heavily in real estate in Belgium, France and in Zaire. He owned Kinshasa's four largest and most popular nightclubs, the biggest of which was Un-deux-trois. TPOK Jazz played there every weekend to a packed house. In 1976, vocalist Zitani Dalienst Ya Ntesa and guitarist Gerry Dialungana were convinced to join TPOK Jazz. Mayaula Mayoni composed a song, Cheri Bondowe which was released in an album that also included Alimatou and Bisalela. In 1977 Franco introduced a handicapped female singer known as Mpongo Love. Despite her handicap which was the result of childhood polio, she went on to become one of the continents most popular singers on the strength of her charming, vivacious voice and her songwriting. Papa Noel Nedule, an accomplished guitarist joined soon after that. Later that year the band represented Zaire in what was Africa's largest ever cultural event, Festac 77 which was staged in Lagos, Nigeria. In 1978 Franco released two songs — "Helene" and "Jacky" — that were deemed "indecent" by the Attorney General of his native country. After a brief trial, he was convicted and sent to prison, along with other band members, including Simaro Lutumba. Franco was released two months later, following street protests. That same year, Mayaula Mayoni released the song "Nabali Misere" (I am married to misery). He quit the band soon afterwards, to pursue a solo career. In 1979 Franco moved his recording base from Kinshasa to Brussels, Belgium, to take advantage of superior recording facilities. Franco embarked on a tour of eight West African countries. That same year Josky released Propretaire. 1980–1989 This period marked the pinnacle in the success of the band and that of its leader, Franco Luambo Makiadi.