Friedrich Julius Reubke (23 March 1834 – 3 June 1858) was a German composer, pianist and organist. In his short life, he composed the Sonata on the 94th Psalm in C minor, which is considered to be one of the greatest organ works in the classical repertoire.Born in Hausneindorf, a small village in the region of the Harz Mountains, Julius Reubke was the eldest son of organ and piano builder Adolf Reubke (1805-1875). Of Julius's five siblings, two brothers, Emil (1836-1884) and Karl (1840-1860), worked with their father; Emil became a partner in 1860 and owned the company from 1872.