N'Yoka Longo Mvula, also known as Jossart, alias Vieux Mbombas, is a DR Congo soukous singer, historical member and current leader of the popular soukous band Zaiko Langa Langa. He his originally from Angola.
He began his career in a big band known as Bel Guide National. On December 24, 1969, in Kinshasa, he founded Zaiko Langa Langa together with Papa Wemba and a group of fellow Bel Guide National members, including Henri Mongombe, D. V. Moanda, Marcelin Bita, and Félix Manuaku Waku. Despite the longevity of Zaiko Langa Langa and their uncountable personnel changes, N'Yoka Longo never left, and he is currently the leader and main song-writer of the band.
In 1977 Longo was chosen to perform with Zaire's National Orchestra at FESTAC in Lagos; this was a significant thrust to his popularity, that has been steadily growing since then. He has written major Zaiko Langa Langa hits, including "Nalala Pongi" and "Amando", and played in over 100 international concert tours.
N'yoka Longo has been reproached of leading Zaiko in a totalitarian, rigorous manners that has been the reason of many departures of prominent members from the group and many major splits of Zaiko.
In 2002, while touring with Zaiko in Europe, N'Yoka Longo was arrested and jailed by the Belgium justice. He was charged of facilitating clandestine and illegal immigration. Couple months later, he was released under bond paid by the D.R. Congo Government. He stayed and performed in Europe with his band Zaiko until 2009. He then returned in January that year to his country, D. R. Congo, where Zaiko has its headquarters.
- The simplified spelling "Nyoka" is also found in literature.