Ludwig Ritter von Köchel since undergone revisions. Mozart's works are often referred to by their K-numbers ("cf." opus number); for example, the "Jupiter" symphony, "Symphony No. 41" K. 551. Moreover, Köchel arranged Mozart's works into twenty-four categories, which were used by Breitkopf & Härtel when they published the first complete edition of Mozart's works from 1877 to 1910, a venture partly funded by Köchel. He also catalogued the works of Johann Fux. Ludwig Ritter von Köchel Ludwig Alois Friedrich Ritter von Köchel (; 14 January 1800 – 3 June 1877) was an Austrian musicologist, writer, composer, botanist and publisher. He is best known for
Catalogue of Works in Refutation of Methodism ever written, and remains the only compilation of books written from a primarily anti-Methodist perspective. An otherwise virtually unknown individual, the only evidence which suggests that the author Decanver ever existed was the publication of his "Catalogue" in 1846. He was self-evidently opposed to the doctrines of Methodism, a branch of Protestant Christianity which emerged from the teachings of John Wesley in 18th century England, and in 1846 compiled the catalogue under the full title of Catalogue of Works in Refutation of Methodism: from its Origin in 1729, to the Present Time: of Those by Methodist Authors on Lay-Representation, Methodist