Ghoshal's mother used to help her in rehearsals and accompany her on the Tanpura, starting with mostly Bengali songs. At the age of six, Ghoshal started with her formal training in classical music. She acquired training from Late Kalyanji Bhai for 18 months and continued her classical music training with Late Mukta Bhide in Mumbai. Her first stage performance was made at a club's annual function. When she turned six, she started her lessons in Hindustani classical music. In 2000, at the age of sixteen, she participated and won the television music reality show "Sa Re Ga Ma" (now "Sa Re Ga Ma Pa") on the channel Zee TV.