Cienu,what is stated in the wikipedia wrote: S.Aishwarya gave her first public concert on September 16, 2007 on the occasion of the 91st Birth Anniversary of her Great Grandmother Bharat Ratna M.S.Subbulakshmi, where she gave vocal accompaniment to her Grandmother Smt.Radha Viswanathan
Around that time I , RShankar, I and coolkarni did come and attend a music academy concert where Surjit Singh Barnala presided , is that the same first public concert.If not do you recollect the rough date when barnala presided . On that day there was also the book release of Gowri ramnarayan . That day I met for the first time my bhAi rshankar.
I think the question was more to do with after the demise of your ammA i think the poster wants to know from whom aishwarya is learning . On a side note , is she now even learning from vidushi jambu kannan, the blog is saying has been learning from vidushi jambu kannan. I am pretty sure saundarya is as of now learning from aishwarya .