In 1998 he released Volume 1 of the DOUBLE FACE compilation series compiling tracks from the Motown and Def Jam back catalogue. In 2000, he released Double Face Volume 2 with the 1st appearance of the singer Matt.

2001 was a crucial year for Dj Kost with the huge success of Double Face 3 (more than 400 000 copies sold ) which is a standout compilation for the Hip-Hop / Rnb scene.

Later that year Dj Kost produced the single “Rnb de Rue” featuring the singer Matt, and joined Matt’s triumphant tour through Europe and France with more than 150 dates.

In 2002 Dj Kost released the 4th volume of Double face and a new project called Rnb Summertime.

In 2003, Kost released Double Face 5 and was the creative behind the project “Max of 109” in association with Skyrock and Pepsi - his role was to steer and to realize this project artistically as well as producing the title track " I have things " sung by Pearl.

Today DJ Kost concentrates on production, radio and the development of his artists on his label Hit Trackerz.. (Double Face, Priss, 1 noel for all …)

Dj Kost was recently awarded most listened to Dj on French Radio with his daily show on NRJFM (aired since September 2004)

...And his mixer of choice Urei 1601 and 1601S.