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
Term Catalogue omitting many; and refusing all under 1sh[illing] [in] Price; hath occasioned the Printing of this Catalogue: wherein those defects are rectified. Collected by, and printed for, the Booksellers of "London". A comparison of the numbers of titles listed in the late 17th and early 18th century term catalogues and numbers the English Short Title Catalogue provides justification for these complaints. The 161 catalogues printed between 1668 and 1711 show an increase in the number of titles. The average catalogue listed 109 books under 10 headings. Some catalogues had up to 13 headings; the minimum was six in the small catalogue