Sef Thissen was born on Tuesday 25 December 1973 in his city Venlo. A Christmas child who, through perseverance and hard work, invariably achieves his constantly newly set musical goals. And of course endowed with the necessary talent, otherwise he would never have really got the wind in his musical sails. As an entrepreneur's son, Sef makes the definitive choice at the age of 35 for a career as a classical singer. An important and wise choice, because classical music is what makes him happy, just like the often extensive organization that hides behind concerts and performances. After all, Thissen is a cultural entrepreneur - entrepreneurship is in his blood - and so the baritone is active before, on and behind the scenes. Thissen follows a different route in his musical career than many of his musical colleagues. This unusual route description eventually leads him continuously to the desired horizons. Once arrived, Thissen looks ahead, to new challenges and prospects.