Did St Petro tour with Extra Musica in Europe and Africa from 1999 to 2001 or was he already settled in France? Because he never appeared in any of the clips or album pictures for Shalai and Trop C'est Trop as a member of the group.
He's not even credited as playing mi-solo for any albums of Zangul – only for Merci by Extra Musica International. I suspect he was their "grand frere", who helped Clan Extra whenever they called, he spiced up partitions that Roga and Sonor created in Brazza prior to recording in Europe but I could be wrong....