Opus number developed other catalogue-number systems; among them the "Bach-Werke-Verzeichnis" (BWV-number), and the "Köchel-Verzeichnis" (K- and KV -numbers) with which are organised the works of Johann Sebastian Bach and Wolfgang Amadeus Mozart, respectively. In the classical period, the Latin word "opus" ("work", "labour") was used to identify, list, and catalogue a work of art. By the 15th and 16th centuries, the word "opus" was used by Italian composers to denote a specific musical composition, and by German composers for collections of music. In compositional practise, numbering musical works in chronological order dates from 17th century Italy, especially Venice. In common usage, the
K (composer) for the film. The promo song features Malgudi Subha and is a rendition of a Mohammed Rafi song from 1970. K is currently working on the music of Telugu film Yatra - a biographical film about Y. S. Rajasekhara Reddy. The film is written and directed by Mahi V. Raghav and stars Mammootty as YSR. 'Best Background Score' -"Yuddham Sei" at the 2013 BIG 92.7FM Tamil Melody Awards (2013). K (composer) Krishna Kumar, better known by his stage name K is an Indian music composer working primarily in films and documentaries. K was born in Nagapattinam, Tamil Nadu. When he