Artist Biography There are several artists named Koko. 1) Koko Stambuk, better know as Koko is the man behind some of Kudai's and Reik's biggest hits, making him one of the best producers and composers today. After leaving the band Glup! he took a break from the music business but now he has decided to launch a career as a solo artist. His first single "Valiente" is now available everywhere. 2) Koko, a female rapper and part of the group Feline Science.