Josef Slavík (26 March 1806 – 30 May 1833), also known as Josef Slawjk or Joseph Slawik, was a Bohemian violin virtuoso and composer, who was expected by Viennese musical critics to become Paganini's successor after composing a supposedly unplayable Concerto in F-sharp minor and teaching himself to play Paganini's "La Campanella" after a single hearing.

[1][circular reference] The first son of Barbora (born Krásová) and Antonín Slavík, teacher and musician, who started to teach Josef violin in the age of four.

Pixis wondered how anyone could write down such mad, unplayable stuff after seeing some of Slavík's compositions (a concerto, variations, etc.).

[4] He was then a young man of nineteen, but already technically superior to other violinists that had been heard in the Austrian capital.

"[6] Franz Schubert composed two violin sonata-like pieces for Slavík and pianist Carl Maria von Bocklet: the Rondo in B minor, D 895 (1826), and the Fantasy in C major, D 934 (1827).