Stefan Knuijt, born on the 15 september 1992 in Nieuw en Sint Joosland started playing bariton when he was 8 years old. He played this instrument at fanfare O.N.D.A Nieuw en Sint Joosland, where he still plays euphonium. He studied this instrument at the "Zeeuwse Muziekschool" in Middelburg, with René Passenier.
When he was 9 years old, he started to play the piano. He the studied piano and composition with Leen de Broekert until 2009, when he continued his piano courses with Rien Balkenende.
From 2009 to 2011 Stefan studied composition at the Royal Conservatoire in The Hague, with Calliope Tsoupaki.
He wrote several works, like "Plosteling Braken de Dijken" for the opening of the "Poeziëdag" in 2005 and "Triste et Joyeux", a piano piece dedicated to his father. He played this piece in the regional final of the composition contest of the "Nederlands Blazers Ensemble".
In 2006 his work, "Le Plus Beau Jour", written for the youth orchestra "Jong ONDA", debuted for the first time.
In november 2006 he became the national champion in the youth devision, whilst playing his euphonium. March 2007 he won the second prize at the Prinses Christina Concours for composition in The Hague and in April 2009 he won the third prize at this contest. In 2008, 2009 and 2010 he won the regional contest of the KNFM (Koninklijke Nederlandse Federatie van Muziekverenigingen), playing his euphonium.
His first piece for brassband debuted may 2008. By order of Brassband "O.K.K." from Westkapelle he composed "Tussen het Hoge en 't Lage Licht", a piece which tells the history of the village. In 2009 Stefan attended masterclasses with the well-known Dutch composer Daan Manneke.
Stefan has now been studying tuba for 3 years, at the Royal Conservatoire with Hendrik Jan Renes, principal tubist of the Rotterdam Philharmonic orchestra. In 2011 he commenced his study in music theory at the royal conservatorium.