Les Troubadours du Roi Baudouin is a choir, with a percussion section, consisting of about 45 Congolese boys from 9 to 14 years old formed by Father Guido Haazen in the early 1950s. He arranged the composition. Missa Luba is a version of the Latin Mass based on traditional Congolese songs. It is completely void of any modern, western musical influences. None of it is written, so certain rhythms, harmonies and embellishments are spontaneous improvisations. This is the re-issue of the original mass, including the 3 bonus children's songs from Baluba. It's pretty awesome.