Shweta is married to Ashwin Shashi, who is her college classmate Aarathi's brother. She is the daughter of the legendary singer Sujatha Mohan. She started her career in singing when she was barely 10 years of age with the song called “Ini Achcham Achcham Illai”from the film Indira with AR Rahman as the music director of the film in 1995. However, she took break to formally return a full-fledged singer with the song “Yedhedo Ennangal Vandhu” from Pattiyal in 2006. Since then it was no looking back for her as she has worked with one of the best music directors. These include A. R. Rahman, Illayaraja, Ousepachan, Deepak Dev, M. Jayachandran, Yuvan Shankar Raja, Harris Jayaraj, G. V. Prakash, Sharreth, Johnson, Vidyasagar,Kannan, Mani Sharma, N. R. Raghunanthan, Devi Sri Prasad Anirudh Ravichander and Manikanth Kadri to name a few.
Her first recording was for Sri AR Rahman as part of the children’s chorus for the songs ‘Kuchi Kuchi Rakkamma’ (Bombay) and ‘Accham Accham Illai’ (Indira). Her first Tamil solo was for the movie ‘Three Roses’ composed by Sri Karthik Raja and the first Malayalam solo was for the movie ‘Lion’ composed by Sri Deepak Dev. Shweta has come a long way since the start of her musical journey over 15 years ago and is going strong.