At the age of eight Vasilev gave his first public appearance and released his first record with the Sofia Philharmonic Orchestra.
In 1994 Vasilev joined the Royal Opera House in London as its youngest ever concertmaster.
Five years later he published an autobiography, Vasko @ 40, and in 2011 he became a judge on the Bulgarian reality television show X Factor.
In 2023 he led the orchestra, under the direction of Antonio Pappano, at the coronation of Charles III and Camilla.
[2] Vasilev has worked with artists such as Plácido Domingo, Sting, The Rolling Stones, Vanessa-Mae and Lili Ivanova.