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
K. S. Chithra arrangement since 2001. Apart from music cds the audiotracs catalogue is available in the digital space like YouTube, iTunes, Google+, Nokia music store etc. Krishna Digidesign is a digital recording studio promoted by K S Chithra in Chennai. The studio is a dream come true project for Chithra.The studio was inaugurated on 6 April 2000 jointly by two of Chithra's mentors K J Yesudas and mastero Ilayaraja in the august presence of her guru Omanakutty and M. G. Radhakrishnan who had introduced her to the field of film music. The first song was recorded by Sonu Nigam to the music