Desh Thillana Notation [portable] -

The notation is your duty . The raga is your dharma . But the improvisation—the tiny kampita (oscillation) on the final S of the Charanam—that is your freedom .

Taka dhim tadhim nadrudhim tatom dru dhim dhirana tana dhirana 2. Anupallavi desh thillana notation

Capital letters (S, R, M, P, D, N) represent notes in the middle octave. The notation is your duty

The most renowned notation for a is the masterpiece composed by Lalgudi G. Jayaraman desh thillana notation