Petit Mais Costaud isn't Herman's song. It a song which was credited to Espe Bass, who put 2 songs as co-founder of Extra Musica on the La Main Noire album (Eternite d'Amour & Petit Mais Costaud). Herman was just the leader singer on that song, like the way he was on Etape and various other Extra Musica songs who were credited to Espe Bass, Durrel Loemba & Roga Roga.
Did Arafat or Papy Bastin ever get a song during his time with Extra Musica? Papy Bastin should have gotten a song on Obligatoire, he wrote for Espe Bass and Rama and he even did mabanga for Redoutable.
The Zenith-show was before the recordings of Trop c’est Trop. The Zenith-show was somewhere in February 2001 with the records of that album starting in spring of the same year. Congolese bands were never recording there albums before big events, except if they were recording in their homeland, which would became more frequent the last years before the combattans-ban, because of the difficulty to get visa’s.