they are the great singers of yesteryears. TM Soundarrajan sang i thing only for Tamil Films and his Murugan songs were so famous even now .Tamilians use to listen. his ullam urugutahya muruga is very famous and Srigazhi Govindarajan is a classical singer who also acted in some Films, like Agasthiar in which he acted in the title role and sang murugan songs and other songs. His murugan songs " Panniru vighigalile parivudan oru vighiyal, is very famous and i dont know he sang in Telegu or in all other South Indian Films and P.P.Srinivas sang in all Films and he is famous for his songs of Lord Venkatachalapathy, and he become very famous from his first song in Tamil movie, Pada Kanikai, in which he sang for Gemini Ganeshan, Kalangalil aval vasantham, all are great and i love their songs very much. they have got different varieties but all are great in their own rights.