Listen to Lecture Demonstration On Niravasl In English By Smt Rvedavalli online. Lecture Demonstration On Niravasl In English By Smt Rvedavalli is a Tamil language song and is sung by R. Vedavalli. Lecture Demonstration On Niravasl In English By Smt Rvedavalli, from the album R Vedavalli M Sangeetham Niraval Eng, was released in the year 2000. The duration of the song is 57:54. Download Tamil songs online from JioSaavn.