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

full_context: Document 1: Andala Ramudu (1973 film): Andala Ramudu is a 1973 Telugu, comedy drama film, film produced by N. S. Murthy on Chitra Kalpana banner and directed by Bapu. Starring Akkineni Nageswara Rao, Latha in the lead roles and music composed by K. V. Mahadevan.The film is based on Mullapudi Venkata Ramana's "Janata Express" (novel). The film is first debut to veteran artist Nutan Prasad & Latha. The film won Nandi Award for Best Feature Film in 1973. The film has given enthusiastically drawing atmosphere and spirit to the movie "Godavari" (2006), directed by Sekhar Kammula.
Document 2: A. M. Rathnam: A. M. Rathnam is an Indian film producer from Andhra Pradesh, known for his works in Telugu cinema and Tamil cinema. Under the gamut of Sri Surya Movies Entertainment, Hyderabad, a movie production house owned by him, he has produced blockbusters in Telugu such as "Karthavyam" (1990), "Peddarikam" (1992) and "Sneham Kosam" (1999) "Kushi" (2001). He ventured into Tamil cinema in 1996 with the blockbuster, "Indian", which was India's Official Entry for the Best Foreign Language Film for the Academy Awards. He then produced films like "Kushi", "Run", "Boys", "Enakku 20 Unakku 18", "Dhool", "Ghilli", "7G Rainbow Colony","Arrambam", Bangaram, "Yennai Arindhaal" and "Vedalam".
Document 3: Shreya Ghoshal: Shreya Ghoshal (born 12 March 1984) is an Indian playback singer. She has received four National Film Awards, six Filmfare Awards including five for Best Female Playback Singer, nine Filmfare Awards South for Best Female Playback Singer (two for Tamil, four for Malayalam, two for Kannada and one for Telugu), two Tamil Nadu State Film Awards and three Kerala State Film Awards. She has recorded songs for film music and albums in various Indian languages and has established herself as a leading playback singer of Indian cinema.
Document 4: Rani Pulomaja Devi: Rani Pulomaja Devi (born 1967)was an Indian Lyricist in Telugu cinema. She was the only lady in India wrote nearly 800 songs which includes with devotional, folk, patriotic & film songs. She won the Best lyricst award for 2012 & 2015 from Bharatamuni arts academy. She honored with Doctorate from University of California, Berkeley for her unbelievable contribution for Telugu cinema in 2015. She established a world record as a professional lady lyric writer for more than 50 movies in a short period. which was recorded in Guinness book of World records, Wonder book of world records & Telugu book of world records
Document 5: Aalayamani: Aalayamani (English title: Temple bell) is a 1962 Tamil language drama film directed by K. Shankar. The film features Sivaji Ganesan, S. S. Rajendran, B. Saroja Devi, C. R. Vijayakumari and M. R. Radha in lead roles. The film, produced by P. S. Veerappa, had musical score by Viswanathan–Ramamoorthy and was released on 23 November 1962. The film was remade in Telugu as "Gudi Gantalu" in 1964 and in Hindi as "Aadmi" in 1968 and in Malayalam as "Oru Raagam Pala Thaalam" in 1979.
Document 6: Sampoorna Ramayanam (1958 film): Sampoorna Ramayanam (English: "The Complete Ramayana" ) is a 1958 Tamil-language Indian historical drama film directed by K. Somu. It is based on Valmiki's "Ramayana". The film features N. T. Rama Rao and Sivaji Ganesan in lead roles. The film, produced by M. A. Venu, had musical score by K. V. Mahadevan and was released on 14 April 1958. K. V. Srinivasan lent voice to N. T. Rama Rao in Tamil. The dubbed Telugu version was released on 14 January 1959. Arudra wrote dialogues and lyrics for the Telugu version.
Document 7: Lata Mangeshkar: Lata Mangeshkar (   ) (born 28 September 1929) is an Indian playback singer and occasional music composer. She is one of the best-known and most respected playback singers in India. Mangeshkar's career started in 1942 and has spanned over seven decades. She has recorded songs for over a thousand Hindi films and has sung songs in over thirty-six regional Indian languages and foreign languages, though primarily in Marathi and Hindi. She is the recipient of three National Film Awards, 12 Bengal Film Journalists' Association Awards, four Filmfare Best Female Playback Awards and many more. The Dadasaheb Phalke Award was bestowed on her in 1989 by the Government of India. She is also the second vocalist, after M. S. Subbulakshmi, to have ever been awarded the Bharat Ratna in 2001, India's highest civilian honour. She has four siblings—Asha Bhosle, Hridaynath Mangeshkar, Usha Mangeshkar and Meena Mangeshkar—of which she is the eldest.
Document 8: Ramu Kariat: Ramu Kariat ("alternatively Ramu Karyat") (1 February 1927 – 10 February 1979) was a legendary Malayali Indian film director for almost three decades from the 1950s to the 1970s. He directed many acclaimed films in Malayalam. His noted films include "Neelakkuyil" (1954), "Minnaminungu" (1957), "Mudiyanaya Puthran" (1961), "Moodupadam" (1963) and the National Award winning "Chemmeen" (1965).
Document 9: P. Susheela: Pulapaka Susheela, commonly known as P. Susheela, is an Indian playback singer associated with the South Indian cinema for over six decades. She has been recognized by both the "Guinness Book of World Records" and the "Asia Book of Records" for singing most number of songs in 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 40,000 film songs across South Indian languages.
Document 10: A. C. Tirulokchandar: During the making of the film Manthiri Kumari in 1950, A.C.Trilogchander was working as a junior assistant on the sets and during the shooting of this film became a close friend of M.G.Ramachandran. Producer A.V. Meiyappan noticed his talent and gave A.C.Trilochander his break as the director in 1962 film Veerathirumagan. With the success of his debut film, he got one more film to direct under AVM banner which was bilingual made simultaneously as "Main Bhi Ladki Hoon" in Hindi and as "Nannum Oru Penn" in Tamil. The latter won the National Film Award for Best Feature Film in Tamil at 11th National Film Awards and also won Filmfare Award for Best film. With this he became a permanent fixture as director with AVM films. He became like the fifth son of Mr. A. V. Meiyapan and became close friend of A. V. M. Saravanan. Trilogchander directed the fiftieth film produced by AVM banner - Anbe Vaa, a romantic comedy film, in 1966 with M.G.Ramachandran in the lead.He directed for the film produced by K. Balaji - Thangai in 1967. He was not only adept at directing social dramas like "Babu" (1971) with Sivaji Ganesan in the lead, "Ramu" (1966) with Gemini Ganesan as the hero but also romantic dramas such as Iru Malargal and Anbalippu as well as the romantic comedies Anbe Vaa and Anbe Aaruyire. He was given the task of directing the first bilingual suspense thriller film from AVM banner in 1967 which was Ave Kallu in Telugu and Adhey Kangal in Tamil. He directed the pair Sivaji Ganeshan and Jayalalitha in 5 films - Deiva Magan, Dharmam Engey, Engirundho Vandhaal, Enga Mama, Avanthan Manidhan. He directed Rajesh Khanna in "Babu" in 1985 which became a hit. His other acclaimed Tamil films include "Thirudan", "Aval", "Dheerga Sumangali", "Vasandatil Oru Naal", "Bhadrakali", "Anbe Aaruyire" and "Bharata Vilas". He was known to co-ordinate the colour schemes of the actors' outfits with the sets designed for the film.
Document 11: Hare Ram: Hare Ram is a 2008 Telugu movie directed by Harshavardhan", and produced by Kalyan Ram, under N.T.R. Arts. Kalyan Ram, Priyamani and Sindhu Tolani play the lead roles while Ali, Brahmanandam, Kota Srinivasa Rao and Raghu Babu play supporting roles. Mickey J Meyer was the music director, "C. Ram Prasad" handled cinematography, and was edited by "Gowtham Raju". The film was released on 18 July 2008. This movie is the next best hit for Kalyan Ram after "Athanokkade" which was a blockbuster. This film was dubbed into Hindi as Julmo Ka Tandav
Document 12: Geetha Madhuri: Geetha Madhuri Sonti is an Indian playback singer and dubbing artist who works primarily in South India Cinema Industry. She became famous with the song "ninne ninne" from the movie "Nachavule" for which she won Nandi Award as the best female playback singer. She also won two Filmfare awards. She holds the record of winning highest number of Filmfare awards for Telugu as best female playback singer. She has sung in Telugu, Tamil, Kannada and Malayalam. She has recorded more than 550 songs for various films and albums. She has participated in an MAA TV show called "Super Singer". In film industry Geetha called as Shreya Ghosal of South. She has worked under the supervision of music directors like Ilayaraja,Vandematharam Srinivas, Koti, M.M. Keeravani, , Raj, Mani Sharma, Ramana Gogula, S.A. Raj Kumar, Sandeep Choutha, Micky-J-Mayer, Devisri Prasad, R.P. Patnaik, Chakri, Nihal, Kalyani Malik, Anup, Sunil Kashyap, Saluri Vasu Rao, Vasanth, Ravi Sankar, Saketha Sairam,Sai karthik, Pradeep Chandra, Shekhar Chandra,Jessigift, S.S. Thaman etc.,
Document 13: Alka Yagnik: Alka Yagnik is a Indian playback singer. She is noted in Hindi cinema for a career spanning over three decades. She is a record seven-time winner from a record of 36 nominations of the Filmfare Award for Best Female Playback Singer, a two-time recipient of the National Film Award as well as several other music awards and honours listed below. Further, as many as twenty of her tracks feature in BBC's "Top 40 Bollywood Soundtracks of all time" review.
Document 14: S. P. Balasubrahmanyam: Sripathi Panditaradhyula Balasubrahmanyam (   ; born 4 June 1946) is an Indian film playback singer, actor, music director, voice actor and film producer. He is mostly referred to as S. P. B. or Balu. He has won the Guinness World Record for recording the highest number of songs. He has garnered six National Film Awards for Best Male Playback Singer, and twenty five Nandi Awards for his works towards Telugu cinema. In 2012, He received the Andhra Pradesh state NTR National Award for his contributions to Indian cinema.
Document 15: Ramu (1968 film): Ramu is a 1968 Telugu-language drama film produced by AVM Productions and directed by A. C. Tirulokchandar. The film stars NTR and Jamuna in the lead roles. It is a remake of the 1966 Tamil film of the same name starring Gemini Ganesan, K. R. Vijaya and Pushpalatha which itself was a remake of the Hindi film "Door Gagan Ki Chhaon Mein" (1964). The soundtrack of the film was composed by R. Goverdhanam and songs rendered by Ghantasala Venkateswara Rao and P. Susheela, most memorable one "Raa Raa Krishnayya".
ground_truth: P. Susheela