Stefan Bruinsma (17-08-1982), a.k.a. Number 9, was born and raised in the north of the Netherlands in a city called Groningen. At the age of 9 he discovered music was his passion, and he took his first piano lessons shortly followed by his first guitar lessons. After developing as a musician he encountered people that shared his vision on making music and performing on stage. At the age of 18 he chose the Rockacademy in Tilburg to develop as an artist and entrepreneur in the music industry. Up till now his life resulted in the following music projects:
Subtle is a music group consisting of artists, producers, rappers, instrumentalists Adam 'Doseone' Drucker, Jeff 'Jel' Logan, Dax Pierson, Marty Dowers, Jordan Dalrymple and Alexander Kort. Although both Adam and Jeff are founding and continuing members of the Anticon music collective, Subtle is not on the Anticon roster. Subtle started as an Oakland, California based band in 2001. While considered by the artists to be "genreless", Subtle has close ties to the hip-hop and indie music scene. Alexander Kort has released CDs on anticon's official web store run by astropitch.