T hiruvidaimarudur Radhakrishnan, mridangam artist, will present a vocal concert at Parvathy on Eldam's Road, Alwarpet, tomorrow, 6.15 p.m. He will present a bunch of Priya ragas that include Shanmukhapriya, Rathipathipriya, Rasikapriya, Natakapriya and so on.