Naadhabrahmam has organised the release of an audio CD ‘Raga Krithika’ by V. Raghul Srinivasan (violin solo) and the book ‘Vinayagar Agaval’, a treatise by Prof. V. S. Kandasamy, on September 12, 6 p.m., at R.K. Swamy Auditorium, Mylapore. The function will be followed by a vocal recital by T. V. Ramprasad.