Gangaraju, professionally known as Hamsalekha, is an Indian film composer and songwriter who works in South Indian cinema, predominantly in the Kannada film industry since the late 1980s. He is also a screenplay writer, dialogue writer, instrumentalist and conductor, having composed and written over 500 albums.
Hamsalekha has won one National Film Award, six Filmfare Awards in the Best Music Director Category, seven Karnataka State Film Awards - four for music direction and three for lyrics - and is a recipient of an honorary doctorate from Bangalore University. His collaboration with V. Ravichandran resulted in producing blockbuster soundtracks in mainstream Kannada cinema.