Dutch-Pakistani rapper, born 30 July 1992 in Lahore, Pakistan and raised in The Hague, South Holland, the Netherlands, where he moved to with his family at the age of three. Rapping in Dutch, F1rstman was originally a trained percussionist, performing in the band 'Fata Morgana' together with Jan Schelvis and Amadou Basou.

By the age of 11, Hassan auditioned for a role in Joop an der Ende's Theater production ''The Lion King''. He was cast to play the role of Simba. After his mentor Amadou Basou had taken him to see a concert of Rahzel in 2001. He began to do many shows performing as a beatboxer, including television and radio performances on Zapp, Vara, Villia Life, Blinq, Funx and slamFm. By the age of 16 him and his brother had launched the label NGS Entertainment together with their friend, and the three began recording their first songs. Since then they have had over 1,289,000 downloads of their digital NGS releases.