Neelakantasivan Cultural Academy (Ph: 90429 18206) is celebrating the Margazhi utsavam from Dec. 14, at Sri Ganapathi Sachidananda Ashram, baby Nagar, velachery. On the inaugural day of the utsavam, which is on till Dec. 20., the Academy honoured N. Ramani (flute), M. Chandrasekaran (violin) and Guruvayur Dorai (mridangam) with the ‘Nada Sudhakara’ award.