త్యాగరాజన్ కేవలం గాయకుడే కాక, గీతరచయిత, స్వరకర్త, గురువు, చక్కని వ్యవహర్త.<ref name=corner/>
He was Principal of the Government Music College in [[Chennai]]. After retirement from this post in 1981, he served as the Principal of the Music Teachers' college run by the [[Madras Music Academy|Music Academy, Chennai]].<ref name=charsur/>
He composed music to rare kritis of lesser known composers like Chengalvaraya Sastri, Ramaswamy Sivan, Annayya, Periyasamy Thooran.
He also composed music to Andal's Tiruppavai, Manaickavasagar's Thiruvembavai and published with notations.<ref name=corner/>