<P> In 1973, Kamal landed his first adult role as Thiagu in the film by K. Balachander, whom the actor considers his mentor . He continued to act in minor roles in several films such as Sollathaan Ninaikkiren (1973) and Naan Avanillai (1974), most of which were directed by Balachander . His breakthrough as an independent lead actor came with the 1974 Malayalam film Kanyakumari . His work in it won him the Filmfare Award for Best Actor (Malayalam). Following that, he starred in a series of films in both languages--Tamil and Malayalam . His breakthrough in Tamil cinema came with Balachander's Apoorva Raagangal (1975); the film earned him a second Filmfare Award, his first in Tamil . Between 1974 and 1978, he won six Filmfare Awards including four consecutive wins for the Best Actor Tamil). Kamal turned producer for Raja Paarvai (1981), in which he played the lead role of a blind musician . The film was produced under the "Haasan Brothers" banner which was later renamed Raaj Kamal Films International . </P> <P> Kamal debuted in Bollywood with Balachander's Ek Duuje Ke Liye (1981), which was a remake of his 1978 Telugu film Maro Charitra . His role as a school teacher who looks after an amnesic girl in Moondram Pirai (1982) won him several accolades, including the Best Actor honours at the National Film Awards and Tamil Nadu State Film Awards . His work in Ramesh Sippy's Hindi film Saagar (1985), a triangular love story, was nominated in both Best Actor and Best Supporting Actor categories at the 33rd Filmfare Awards . Under Raaj Kamal Films International, he produced films such as: Vikram (1986), Apoorva Sagodharargal (1989), Thevar Magan (1992) and Hey Ram (2000). As a producer he won a Filmfare Award and National Film Award for Apoorva Sagodharargal and Thevar Magan . Seven films featuring Kamal have been submitted by India to the Academy Awards for Best Foreign Language Film, the most for any actor in India . In 2009, he became one of the few actors in India to have completed 50 years working in cinema . His work Vishwaroopam (2013), which he also produced and directed, won two awards at the 60th National Film Awards . </P>

Who directed the film in which kamal hassan made his acting debut