Swarnalatha's family moved to Chennai to seek opportunities in the film industry for her singing talent. The first opportunity came from M. S. Viswanathan in 1987, when she performed a duet with K. J. Yesudas, "Chinnachiru Kiliye" in the film "Neethikku Thandanai". Subsequently, she was approached by many other music directors to perform songs under their baton. She also had the opportunity to work with director P. Venu. She was recruited by legendary musicians like Ilaiyaraaja and A. R. Rahman. She also recorded a few Hindi songs, the most notable one being "Hai Rama Yeh Kya Hua" from the film "Rangeela" with singer Hariharan.