He initially learnt violin under Kanchi Janardhanam. He later learnt from the multi-faceted genius T.V. Gopalakrishnan. At a very young age Varadarajan has accompanied many leading artists of Carnatic music and has established himself as a front ranking musician. His style of play is characterized by excellent control over the instrument with brilliant repartees that inspire the main artiste. He has been conferred with several titles and awards and has for more than 20 years, given solo concerts and traveled the world on several concert tours as an accompanying artist.