Petra Thaaithanai song is a Carnatic vocal song from the DK. Pattammal - Live at Music Academy (1989) released on . Music of Petra Thaaithanai song is composed by . Petra Thaaithanai was sung by DK. Pattammal. Download Petra Thaaithanai song from DK. Pattammal - Live at Music Academy (1989) on Raaga.com.