S Janaki is very famous for her voice modulation according to the age of the character .
All such songs turned to be big hits. She sang some songs in kid’s voice in 70’s especially in Kannada, which were popular. But Kanna Nee Enge from Tamil Movie Rushi Kanda Poonai released in 1980 turned to be a sensational hit and every one recognized her rare talent. (This is the only movie which had S Janaki as a lyricist ). This song was originally written and composed by her. She sang it in a concert to entertain kids. The producers of the movie requested her to sing the same in their movie. Ilayaraja made small changes in the tune and made it a memorable composition. He made Janaki amma sing in kid, old woman and even male voice. She made all his experiments a grand success. Several music directors followed the same trend and gave her such songs. She even got Andhra Pradesh State Government Award for her voice modulation in Govullu Thellana song in Sapthapadi. She dubbed her voice for child artist Baby Sujitha in two Telugu movies ‘Chandamama Raave’ and ‘Judgment’.
Listen some of her songs with this unique talent and stay tuned for more songs !!!
| Sno | Song | Language | Co Singer | Voice of |
| 1 | Live Performace | Tamil | Solo | Kid,Old Women,Male |
| 2 | Kanna Nee Enge | Tamil | Solo | Kid |
| 3 | Govullu Thellana | Telugu | SPB | Kid |
| 4 | Attukutti | Tamil | Malaysia Vasydevan | Old Women |
| 5 | Ellu Hogalla | Kannada | PBS | Kid |
| 6 | mami peru | Tamil | Solo | Adolescent |
| 7 | Aluka Panupu | Telugu | Dual Voice | Old Women |
| 8 | Nija Heluvenu | Kannada | P Susheela | Kid |
| 9 | Daddy Daddy | Tamil | Malaysia Vasydevan | Kid |
| 10 | Kizukam peeti | Malayalam | Jayachandra | Kid |
| 11 | Patante pata kadu | Telugu | Solo | Kid |
| 12 | Aa Deepamela veligedi | Teliugu | Solo | Boy |
| 13 | Amma Nanna | Telugu | Solo | Kid |
| 14 | Gunnamamidi | Telugu | Solo | Boy |
| 15 | Annaya Annaya | Kannada | Dual Voice | Kid |
| 16 | Poda Poda | Tamil | Solo | Old Woman |
| 17 | Roja magal | Tamil | Dual Voice | Kid |
| 18 | Sihimutthu Sihimuthu | Kannada | PBS | Kid |
| 19 | Kattu Kathalu | Telugu | SPB | Old Woman |
| 20 | Baby Baby | Tamil | TMS | Kid |
| 21 | Deepam mani Deepam | Malayalam | Dual Voice | Old Women |
| 22 | Thayiya Thandeya | Kannada | Solo | Kid |
| 23 | Eriyile | Tamil | Ilayaraja | Boy |
| 24 | Nee Meetida | Kannada | Solo | Kid |
| 25 | Thalam Thalolam | Malayalam | Dual Voice | Kid |
| 26 | Bharata Nattil | Malayalam | Solo | Kid |
| 27 | KeLiddu SuLLagabahudu | Kannada | Solo | Kid |
| 28 | Eko Ee Kopa | Kannada | SPB | Kid |
| 29 | Tooth Paste Irukku | Tamil | SPB | Kid |
| 30 | Mummy Daddy | Malayalam | Dual Voice | Kid |
| 31 | Manassin Aarohanam | Malayalam | Balamurali Krishna | Kid |
| 32 | Raave Raave Chandamama | Telugu | Solo | Kid |
| 33 | Mummy Mummy | Malayalam | Solo | Kid |
| 34 | Bhoomige Banda | Kannada | SPB | Kid |
| 35 | Kokkamandi | Malayalam | K J Yesudas | Kid |
| 36 | Papaperu Malli | Telugu | Raghavulu | Adolescent |
| 37 | Hello Hello Oo Tathaiah | Telugu | SPB,PS | Boy |
| 38 | Tappu Madodu Sahaja | Kannada | SPB & Dual Voice | Kid |
| 39 | Entha Soggunnavo | Telugu | SPB&Dual Voice | Male playing Old Woman’s role |
| 40 | Poove Poove Chinna Poove | Tamil | Solo | Kid |
| 41 | Nadichedi Jeevudu | Telugu | Solo | Kid |
| 42 | Bachche To Bhagwan | Hindi | Solo | Girl |
| 43 | Konaseema Kodagitha | Telugu | Dual Voice | Tribal Woman |
| 44 | Puttinti Bomma | Telugu | Dual Voice | Kid |
| 45 | I am a Little star | Tamil | Solo | Kid Boy |
| 46 | Neekela Kopam Shankara | Telugu | Solo | Kid |
| 47 | Swaras | Hindi Movie | Pdt Rajendra Mishra | Kid |
| 48 | Dekho ye Kya samay | Hindi | Solo | Kid |
| 49 | Thothu Thothu | Malayalam | Solo | Male |
| 50 | Pora Pora Krishna | Telugu | Solo | Old Woman |
| 51 | Oru Jevandaan | Tamil | Solo | Kid |
| 52 | Vennelaina Cheekatayina | Telugu | Solo | Kid |