O S Thyagarajan is a classicist of traditional outfit who ‘paints’ in glorious colours the fine shades of raga, kriti and swara in his numerous concerts. Besides his father, he had his earlier training under Tiger Varadachariar and Tanjore Ponniah Pillai. An ‘A’ grade artist of the All India Radio and of Doordarshan, he has given a large number of concerts well appreciated and relished.