"According to Natya Shastra as proposed by Brahma, Bharat staged ‘Amrit Manthan’ aNd ‘Tripuradha’ before Shiva on a suitable place of Mount Kailasha. Both these dramas were composed by Brahma. Siva was very pleased and said – “it reminds me of my evening dances”. This dance was accompanied by various ‘Angaharas’ and ‘Karanas’. Then he told Bharata “I am glad to enjoy your dramas but I advise you present dances accompanied by songs. Then he instructed Tandu to train Bharata in ‘Angahaara’, which was done accordingly. ‘ Lasya’ was added by Parvati. Finally, Tandu designed the dance with songs.In this way the Tandava dance evolved. It was composed and designed by Tandu, so it may be called Tandava/"
January 1, 1970
https://en.wikiquote.org/wiki/Bharatanatyam