PIANO SONATA NO. 4 from the years 1962?1964 is dedicated to the memory of Fiser?s friend, the pianist Antonín Jemelík, who died tragically. As a tribute to their friendship the composer incorporated into the introduction a quotation from their favourite work, Piano Sonata No. 10, Op. 70,by Alexander Scriabin. The tragedy of the death of the composer?s friend pervades the emotionally intense passag…