Ramu (1968 film)
Ramu is a 1968 Telugu language drama film, produced by M. Murugan, M. Saravanan, M. Kumaran under the AVM Productions banner and directed by A. C. Tirulokchandar. It stars N. T. Rama Rao, Jamuna in the lead roles and music composed by R. Goverdhanam. The film is a remake of the Hindi movie "Door Gagan Ki Chhaon Mein" (1964), which was first remade as the Tamil movie of the same name" (1966). The film was recorded as a "Super Hit" at the box office.
Ramu (1968 film)
Ramu (Master Rajkumar) is a proactive boy, who leads a happy life with father Raja (N. T. Rama Rao) and mother Seeta (Pushpalata). Raja works as a soldier, once he gets an emergency call, hence he rushes to the war field. During that time, dacoits attack their village and put fire to Ramu's house in his mother being burnt alive, looking at it, Ramu becomes dumb. After that, their neighbor Chinnaiah (Perumallu) takes care of Ramu and waiting for Raja's arrival. Raja returns go into the shock knowing the facts, takes an oath to get back his son's voice and they leave the village. Parallelly, in another village, Lakshmi (Jamuna) daughter of Sipayi Singanna (S. V. Raghavan), a wealthy woman whose property is under the guardianship of her maternal uncle Ganganna (Relangi). Ganganna has two sons Ranganna (Rajanala) as crooked as his father and Venkanna (Padmanabham) a kind-hearted person. Ganganna wants to grab the Lakshmi's property by performing her marriage with Ranganna. But Lakshmi gets back her property through the court. Due to which, Ganganna develops a grudge against her. On their way back, Ramu & Raja are passing through the village where Ranganna beats Ramu for obstructing when the quarrel arises between Raja & Ranganna. Ranganna back-stabs Raja and he faint, Lakshmi spots them, takes them along with her and requests Raja to stay in her house until he recovers. Days pass on, Ramu gets closer to Lakshmi, she also takes care of him as her own son and loves Raja. Meanwhile, Ganganna makes no one to work in Lakshmi's fields when Raja comes forward and completes the farming. Eventually, Once Ramu visits a burial ground where he meets a madman Gopalam (S. V. Ranga Rao), whose daughter has been cheated by Ganganna. Both Gopalam & Ramu become good friends. Frustrated, Ranganna kidnaps Ramu and keeps him in his custody. Lakshmi, in search of Ramu, reaches there when Ranganna tries to molest her, Venkanna informs it to Raja and he too lands. In that quarrel, fire erupts and Lakshmi is stuck in it. Due to this incident, Ramu gets back his voice and saves her. Gopalam recognizes Ganganna, kills him and gets arrested. Finally, the movie ends on a happy note with the marriage of Raja & Lakshmi.
P. Susheela
Pulapaka Susheela (born 13 November 1935), popularly known as P. Susheela, is an Indian playback singer associated with the South Indian cinema primarily from Andhra Pradesh for over six decades. She has been recognized by the "Guinness Book of World Records" for performing a record number of songs in different Indian languages. She is also the recipient of five National Film Award for Best Female Playback Singer and numerous state awards. Susheela is widely acclaimed as a singer who defined feminism in South Indian cinema and is well known for her mellifluous vocal performances for over 50,000 film songs across South Indian languages.

Question: Which widely acclaimed singer on the soundtrack of Ramu defined feminism in South Indian Cinema?
Answer: P. Susheela