And this view is also advanced by Prof S R Janakiraman in one of his lecture demonstrations.
Older structure of a tana varna ( circa 1750): The varna was structured with a pallavi, followed by anupallavi & muktayisvara, followed by ettugadda Pallavi/carana & its sets of ettuagada svaras, followed by a small sahitya portion called anubandha.
Amongst these compositions, the tana varnas in Kalyani and Todi are heard in the concert circuit along with the Todi, Kalyani (‘Needu carana’) and Nattakurinji krithis.
Also there are 2 other daru’s found in the Tanjore Sarasvati Mahal collection -”Sringara Na Mohana” in the raga Begada and “Vintadanara” in Madhyamavathi, both of which sport “kasturiranga” as an ankita/mudra.
This was then followed by the ettugada pallavi or carana which was used as a refrain to render the 4 or 5 sets of ettugada svaras.
Prof Sambamoorthy places the timeline of Pallavi Gopala Iyer as the latter part of 18 century.
Needless to say each one of Adiyappayya’s disciples went on to make a mark in the world of music with their contribution!
Prof Sambamurthy with authority credits Adiyappayya as the first to systematize the art of rendering raga, tana and pallavi as an organized mechanism of exposition.
His compositions sport the raja mudra as an ankita as well.
The following are the compositions that are available to us through the Sangita Sampradaya Pradarshini (SSP), its anubandha and manuscripts found in the Sarasvati Mahal Library.