Question: Who directed and composed music for the 2006 film that K. J. Singh won a National Film Award for Best Audiography for?

Context paragraphs:
V. K. Prakash: V. K. Prakash is an Indian director who has worked on films, music videos, and commercials.  He has worked on Malayalam, Telugu, Marathi, Kannada and Hindi films, although he is mainly active in Malayalam cinema.  Born in a Malayali family in Mumbai, and currently based in Bangalore, he runs his own ad film production company called "Trends Adfilm Makers Pvt Ltd".  He studied in the School of Drama, Thrissur before commencing his career in the ad film industry.  V. K. Prakash's first film "Punaradhivasam" received the awards for National Film Award for Best Feature Film in Malayalam, Kerala State Film Award for Best Debut Director and Kerala State Film Award for Best Story. .  The second National Film Award was awarded for Nirnayakam as The Best Film on Social Issues in 2016.

Ramakadha: Ramakadha (Malayalam: രാമകഥാ) is a song composed by Raveendran as a part of the soundtrack for the 1991 Malayalam film "Bharatham".  This song, composed in Shubhapantuvarali raga, which is one of the most famous compositions in the "raga" in South India which had the lyrics penned by Kaithapram.  The song was sung by Dr. K. J. Yesudas.  This song was picturised on Mohanlal in the climax of the film.  Yesudas won his 6th National Film Award for Best Male Playback Singer and Raveendran won National Film Award Special Mention and Kerala State Film Award for Best Music Director for this song.

Omkara (2006 film): Omkara is a 2006 Indian crime drama film adapted from Shakespeare’s "Othello", co-written and directed by Vishal Bhardwaj.  It starred Ajay Devgan, Saif Ali Khan, Vivek Oberoi and Kareena Kapoor in the lead roles, supported by Naseeruddin Shah, Konkona Sen Sharma and Bipasha Basu.  The director Vishal Bhardwaj himself composed the entire music for the film, including the background score, with lyrics by Gulzar.  The film is set in Meerut, a town in Western Uttar Pradesh.

Ravi Jadhav: Ravi Jadhav is an Indian film personality.  Natarang, his first film as director,Actor studied in Sir J.J Institute of Applied art won the 2009 National Film Award for Best Feature Film in Marathi.  Some of his other films are Balak Palak, produced by Ritesh Deshmukh, and Balgandharva, which won three national awards at the 59th National Film Awards.  "The Landscape" (duration 2.3 minutes) an animation film directed by him for Film Division, won the National Film Award for Best Non-Feature Animation Film at the 48th National Film Awards.

Apurba Kishore Bir: Apurba Kishore Bir (born 1948), also known as A. K. Bir, is an Indian film cinematographer, screenwriter and director.  An alumnus of the Film and Television Institute of India, Pune, he worked in various Ad-films and documentaries before making his feature-film debut.  He won the National Film Award for Best Cinematography for "27 Down", his debut film.  His directional debut "Adi Mimansa" won the Nargis Dutt Award for Best Feature Film on National Integration.  Bir's other directional ventures "Lavanya Preeti" and "Baaja" were bestowed with the National Film Award for Best Children's Film.  As of 2014, he has won nine National Film Awards—including three for Best Cinematography—and is one of the directors of National Film Development Corporation of India.

A. S. Laxmi Narayanan: A. S. Laxmi Narayanan (commonly referred to as Laxmi Narayanan) is an audiographer - sound engineer, mixer and sound editor from Vellore in Tamil Nadu.  He is based in A. R. Rahman's studio, the Panchathan Record Inn and AM Studios.  He won the National Film Award for Best Audiography for his work on the acclaimed feature film "Kannathil Muthamittal" (2002), directed by Mani Ratnam.  He has also won the Tamil Nadu State Film Award for Best Audiographer for the various films in 2005.

K. J. Singh: Kanwarjit Singh Sawhney, a.k.a. K. J. Singh is an Indian audio engineer based in Mumbai who won the 54th National Film Award for Best Audiography and Filmfare Award for Best Sound Design with Shajith Koyeri and Subash Sahu for his work on the 2006 film "Omkara".

G. V. Iyer: Ganapathi Venkataramana Iyer (3 September 1917 – 21 December 2003), popularly known as G. V. Iyer, was a well-known Indian film director and actor.  He was nicknamed "Kannada Bheeshma", and was the only person who made movies in Sanskrit.  His movie "Adi Shankaracharya" (1983) won four National Film Award, including Best Film, Best Screenplay, Best Cinematography and Best Audiography.  His films were well known for their spiritual themes.  He was born in 1917 in Nanjanagud in Mysore district of Karnataka state in South India.  His most critically acclaimed films "Bhagavad Gita" (1993), which won the National Film Award for Best Feature Film and was nominated for Best Film at the Bogotá Film Festival.  And Swami Vivekananda (1998), Mithun Chakraborty won national award for Best Supporting Actor.

Sukhwinder Singh: Sukhwinder Singh (born 18 July 1971) is an Indian Bollywood playback singer.  Singh is famous for singing "Chaiyya Chaiyya" for which he won the Best Male Playback Award at the 1999 Filmfare Awards.  The song, from Mani Ratnam's 1998 film "Dil Se. . ", was composed by A. R. Rahman, written by Gulzar, and sung in duet with Sapna Awasthi.  It was also featured in the musical "Bombay Dreams" and, in remixed arrangements, in the titles and credits segments of Spike Lee's 2006 film, "Inside Man".  Singh later gained more international fame for singing "Jai Ho" from the film "Slumdog Millionaire", which won an Academy Award for Best Original Song and a Grammy Award for Best Song Written for a Motion Picture, Television or Other Visual Media.  His rendition for the 2014 released film "Haider" fetched him the National Film Award for Best Male Playback Singer.

National Film Award for Best Audiography: The National Film Award for Best Audiography is one of the National Film Awards presented annually by the Directorate of Film Festivals, the organisation set up by Ministry of Information and Broadcasting, India.  It is one of several awards presented for feature films and awarded with Rajat Kamal (Silver Lotus).

Supporting paragraphs: K. J. Singh Omkara (2006 film)
Answer: Vishal Bhardwaj