She recorded a children's album called Bal Geet, which had S.Khale composing the songs and Shanta Shelke penning the lyrics.

"[5]Poornima's early start gave her the chance to work with Naushad, Madan Mohan, C. Ramchandra, Salil Choudhury, Anil Biswas, Kalyanji-Anandji, Laxmikant–Pyarelal, S.D.

Her last song as Sushma Shreshtha was in N.Chandra's Ankush: "Itni Shakti Humein Dena Data" (along with main singer Pushpa Pagdhare.

Her song "Barsaat Mein Jab Aayega Saawan Ka Maheena" from Maa was a hit.

[8] As an adult she sang for many music directors including Chitragupt, Laxmikant-Pyarelal, Bappi Lahiri, Rajesh Roshan, M. S. Vishwanathan, Ravindra Jain, Anand-Milind, Anu Malik, Jatin–Lalit, Raamlaxman, Nadeem-Shravan, M.M.Kreem, Lesle Lewis, Viju Shah, Anand Raj Anand, Nikhil-Vinay, Vishal–Shekhar, Dilip Sen -Sameer Sen, Sukhwinder Singh, Ghulam Ali, Jeet-Pritam, Aadesh Shrivastava and Mani Sharma.

She sang popular numbers such as "Channe Ke Khet Main" from Anjaam, "Batti Na Bujha" from Gopi Kishan (both 1994), "Shaam Hain Dhuan Dhuan" from Diljale (1996), "Mr Lova Lova" from Ishq (1999) and in a series of David Dhawan films like such as Coolie No.

[9] She sang for actresses including Sridevi, Jaya Prada, Juhi Chawla, Madhuri Dixit, Sarika, Manisha Koirala, Simi Garewal, Deepti Naval, Ramya Krishnan, Rambha, Sushmita Sen, Shilpa Shirodkar, Karishma Kapoor, Raveena Tandon, Kajol, Rani Mukherji, Madhu, Tabu, Preity Zinta, Ayesha Jhulka, Shilpa Shetty, Sonali Bendre and Mamta Kulkarni.

[12][13] Poornima has sung in many languages including Bengali, Nepali, Marathi, Bhojpuri, Punjabi, Gujarati, Oriya, Rajasthani, Assamese, Haryanvi, Garhwali and Arabic.

[17] She was also a judge in Bhojpuri language singing reality show Zilla Top which aired on Mahuaa TV.