Ghoshal took vocal lessons and did workshops with Kalyanji Virji Shah, where she learnt the technique about "throw of voice, straight notes, vibratos". She considers classical music training as an asset in playback since it "keeps one's voice fit and fresh". Music director Shekhar Ravjiani praised Ghoshal for her singing versatility. According to Sonu Nigam, the best quality about Ghoshal is that the expressions come perfectly along with mannerisms. Music director and singer M. Jayachandran praised Ghoshal by saying, "It is amazing how she writes down the lyrics in Hindi and then gives her signature nuanced expressions to Malayalam words". During her interviews, Ghoshal mentioned, "I cannot sing double meaning songs or the songs which have vulgar lyrics".