Hyderabad, Oct 02: Ghantasala Venkateswara Rao had passed away 40 years ago but still his songs and his voice entertain Telugu music lovers.Ch. Rama Rao, who did immense research on Ghantasala and even published a book titled Ghantasala Patasala. Directed by Ch. Rama Rao the production to the movie is done by Lakshmi Neeraja.Singer Krishna Chaitanya and his wife Mrudula are playing the main in the film. However, the movie is yet to complete the shoot which is scheduled to release in December. But, here comes the dispute that Ghantasala s wife and his younger son are opposing the film. The family sources also say that the legendary music director had a clean image and led a controversy-free life which draws the interest of the audience.After the director showed the whole film to Ghantasala family, they began to oppose the film by serving the legal notice to the makers.Withal the permission granted, the die-hard fan of Ghantasala proceeded to make a movie with huge amount on shooting without more publicity and denied legal permission by family members.Though the publicity to the movie has not been done, the controversy itself dragged the movie into the limelight and created a huge popularity.