Sivakumar is an excellent mridangam accompanist. Sri Sivakumar hails from a family of famous musicians. He is the son of Gana Saraswathi Smt. D. K. Pattammal and son-in-law of mridangam maestro Palghat Sri Mani Iyer.
He is the disciple of Palghat Kunjumani and later had advanced training from Palghat Sri Mani Iyer. He has been accompanying all of the senior Carnatic artists for the last 50 years. He often accompanies his daughter, vocalist Nithyasree Mahadevan.