Köchel catalogue Köchel catalogue The Köchel catalogue () is a chronological catalogue of compositions by Wolfgang Amadeus Mozart, originally created by Ludwig von Köchel, in which the entries are abbreviated "K." and "KV". The numbers of the Köchel catalogue reflect the continuing establishment of a complete chronology of Mozart's works, and provide a shorthand reference to the compositions. According to Köchel's counting, "Requiem in D minor" is the 626th piece Mozart composed, thus is designated either "K. 626" or "KV 626"; however, his original catalogue (1862) of Mozart has been twice revised, and some works have had three KV. numbers, e.g. Mozart's
19th-century London and other kiln-fired tiles became popular facings for buildings in the 1880's and 1890's, because they resisted soot and damp and also provided much-welcome color to buildings that were otherwise drab. Many famous buildings and landmarks of London were constructed during the 19th century including: 19th-century London This article covers the 19th century history of London, during which it grew enormously to become a global city of immense importance, and the capital of the British Empire, fed by immigrants from the colonies and refugees from conflicts and famines. It was the largest city in the world from about 1825, the