Sebastiaan was born in the Netherlands, and moved to Vermont in 2010. He is a student of master teacher Paul Orgel, who teaches at UVM. In 2016, Sebastiaan accompanied the Vermont Youth Orchestra in Stravinsky’s Firebird, Prokofiev’s Romeo and Juliet and Falla’s The Three-Cornered Hat. In August 2016, he performed Bach’s Brandenburg Concerto No. 5 with VYO and Central Vermont Chamber Music Festival Artists in Randolph. Sebastiaan also plays in the Flynn Youth Jazz Combo and the jazz combo Blue Slate, who have performed at Radio Bean, ArtsRiot, and 242 Main in Burlington. A sophomore at Mount Mansfield Union High School, Sebastiaan also plays marimba and bells in the school's marching band and orchestra.