In 1998, now a duo, Ärsenik released their first album Quelques gouttes suffisent went double gold.
In 2007 the group released a disc titled S'il en reste quelque chose which included the most popular songs from the two brothers, such as "L'enfer remonte à la surface", "Rime & chatiments" and "Sexe, pouvoir & biftons".
In the late 1990s, Calbo and his brother Lino teamed up with a group of rappers who were also second-generation Africans, on a collaborative project called Bisso Na Bisso, an expression which means "just between ourselves" in Lingala, the most commonly spoken language in the Congo region.
The group embarked on a collective return to their African roots, featuring music with an innovative fusion of styles, that mixed modern hip-hop and zouk sounds with traditional Congolese rumba.
In 2003, he charted in a hit "Trop de peine" by Lynnsha featuring Calbo vocals.