After his success on the streets with the songs 'Vul me glassoe' and 'Wij zijn leip' Sjaak did a collabo with Appa. The track was called 'Ik heb schijt'. The clip has over 1 million views on You Tube. His success grew after the song 'Dubbel O' with rapper Yes-R.
Sjaak is signed by Ali B's label SPEC Music.