"The artist's first task is to forget himself." This statement, bold in it's time, has been ascribed to Eugène Ysaÿe, referred to as the "King of the Violin", who as a composer and performer considerably contributed to the modernisation of violin playing. In 1923, he was so deeply impressed by J. S. Bach's Violin Sonata No. 1 in G minor, BWV 1001, as performed by Joseph Szigeti, that within a few hours (!) he sketched a set of six sonatas as a counterpart to Bach's Sonatas and Partitas, BWV 1001-1006. Ysaÿe dedicated each of his sonatas to a superb contemporary violinist, tailoring it to his style. Technically reaching the limits of the instrument, the pieces placed enormous requirements on the dedicatees (Szigeti, Thibaud, Enescu, Kreisler, Crickboom, Quiroga), yet they remain challenging for the violinists of today. One hundred years after Ysaÿe created the set of six sonatas, this formidable task has been undertaken by the outstanding young Czech virtuoso Daniel Matejca, the winner of the Eurovision Young Musicians competition (2022), Telemann Violin Competition (Poznan 2020) and Jugend musiziert (Halle 2019). Matejca studied with such distinguished violinists as Boris Belkin and Christian Tetzlaff, and, after collaborating to acclaim with the Prague Radio Symphony Orchestra, has been invited to perform with other renowned orchestras. Supraphon has shifted the 100-year-old concept to the 21st century and commissioned a composition that would reflect Ysaÿe's sonatas, as well as young violinists' musicality and virtuosity. Jana Vörösová's Obsession II is both answer and challenge. Ysaÿe's sonatas - a cherished challenge for the young virtuoso Daniel Matejca