For aspiring young musicians, every concert opportunity is an acid test. In a pleasant irony, the charm of the old school music came as a whiff of fresh air in Dhanush Anantharaman’s vocal recital, which began with Tyagaraja’s ‘Tulasee dalamulache’ in Mayamalavagowla. After a tidy raga essay of Kalyani, Supriya flowed seamlessly into Patnam Subramania Iyer’s ‘Nijadasa varada’, where the …