I didn't like that of Koffi. Because of Koffi correcting his own vocals in the studio which made it sound it very fack. If you listen well to Tchernobyl you can hear the original vocals and some mabanga's. I guess that he did that after all those critics he got from those journalists and music-specialists who said that he didn't sing well at Olympia (in those years he started to sing with that chinese voice eeeeeh). They also corrected the chorus with then only Fally, Jordan Kusa and Lola Muana singing and erasing Depitcho's and them doing Eric Tutsi's and Musthapa's vocals. Jordan Kusa singing Lola Muana's vocal of Rond Point in the studio. CNN doing some parts of Ocean, correcting some animations and Ocean also correcting his animations since that his mic was often on off. For Koffi's Bercy, I only liked the sound of the instruments (Drums, Guitars and Bass)
King Kester Emeneya mocked Koffi Olomide for doing that, but he would do exactly the same thing for his Olympia and Zenith-cd versions. But he was still not satified with result and decided to re-record both concerts in the studio and release them under the name Rendre a Cesar vol. 1 & 2.