Krishnankoil Venkadachalam Mahadevan was an Indian composer, singer-songwriter, music producer, and musician who won the inaugural National Film Award for Best Music Direction in (1967) for Kandan Karunai. Known for his works in Tamil, Telugu, Malayalam, and Kannada films. He is best known for his contributions in works such as Manchi Manasulu (1962), []] (1963), Thiruvilaiyadal (1965), Saraswathi Sabatham (1966), Kandan Karunai (1967), Thillana Mohanambal (1968), Adimai Penn (1969), Balaraju Katha (1970), Athiparasakthi (1971), Sankarabharanam (1979), Saptapadi (1981), Sirivennela (1986), Sruthilayalu (1987), Pelli Pustakam (1991), and Swathi Kiranam (1992).

The National Film Award for Best Music Direction is an honour presented annually at the National Film Awards by the Directorate of Film Festivals to a musician who has composed the best score for films produced within the Indian film industry. The award was first introduced at the 15th National Film Awards in 1967. At the 42nd National Film Awards, an award for "Best Background Score" was instituted. It was however discontinued after that, and it was not until 2009 that the category was re-introduced. A total of 51 awards—including award for Best Background score—to 40 different composers.