This is the first publication of the Sonata for French horn and piano by Vsevolod Petrovich Zaderatsky, which presents a worthy addition to the horn repertoire. The 65-year delay of this publication is connected to the peculiar circumstances of the composer's life. His fate and the fate of his musical legacy are highly unordinary even in the context of the events of the first half of the 20th century. During his lifetime he was denied the right to live in the major cities of the Soviet Union or to have his music performed or published. Publications about his music were also forbidden. Only more than 25 years after his death in 1953 his musical scores had begun to be published, and the Sonata for French horn and piano had to wait a long time after that, following its turn after the publications of numerous piano and vocal works.Vsevolod Petrovich Zaderatsky was born in 1891 in Rovno into a family of a railroad engineer. In 1910 he enrolled into the Law Department of the Moscow University and into the Moscow Conservatory, where he studied composition with Sergei Taneyev and Mikhail Ippolitov-lvanov and piano with Genrikh Pakhulsky and Karl Kipp. In 1915-1916 he was the music teacher of Tsarevich Alexei, the son of Tsar Nicholas II, which became a reason for his persecution in the Soviet times. Being an officer in the Russian Army during World War I, after the Bolshevik Revolution in 1917 Zaderatsky joined the White Army led by General Denikin, having traversed its entire tortuous path. Having survived miraculously the tragic outcome of the Russian Civil War, Zaderatsky was designated to live in Ryazan, where he was arrested in 1922 and in 1926, as a result of which all of his previous musical compositions were destroyed. He was released from imprisonment in 1928, and presently only the compositions written between 1928 and 1952 are available to us. Permission to live in Moscow had been granted to him in 1929-1934. Subsequently he lived in Yaroslavl, Krasnodar, Zhitomir and, finally, Lvov, where he had spent the final five years of his life. In 1937 Zaderatsky was arrested once again and spent three years at one of the GULAG labor camps at the Kolyma.The composer's musical legacy includes operas, symphonies, works for large and small chamber ensembles, piano and vocal music. Piano music takes up a leading position in his music and is represented by various genres. The most remarkable and unprecedented occurrence in world practice were the 24 Preludes and Fugues for piano composed by him in 1937-1938 in labor camp conditions. They were written in pencil on telegraph sheets and scraps of paper, which provides a unique testimony of inner resistance to adverse life circumstances.