Starting time : 4:35
Ending Time : 6:17
As seen in the previous post, shifting from one nadai to another nadai can be done in different ways. He mani sir has chosen a simple method. Taking a syllable of 8 mathrai playing the same in chatursram and tisram.
In simple words, if you play a syllable of 8, 2 times in 4 Aksharams (16 mathrais), it should be played 3 times in 4 Akshrams (24 mathrais). This is what he is doing from minute 5:00 to 5:28. The korvai starts @ 5:30. The Korvai is defined for 1.5 Avarthanams (2 kalai) / 3 avarthanams (1 Kalai) or 24 Aksharams of chatursram,which is 32 * 3 = 96 Matharais.
while converting the same into tisram, this comes to 1 Avarthanams(2 kalai) or 2 Avarthanams (1 kalai) or 16 aksharams or 48 * 2 = 96 Mathrais. The 48 is nothing but, 6 mathrais per aksharam (1 beat) and aditalam comprises of 8 beats its is 8 * 6 gives you 48.
The korvai is structured as into two parts. The first part is set to 8 Aksharams and the second part is set for 9 aksharams for thisram, if it has to played for chatursram, the same thing will fit into 10.5 aksharams and 13.5 Aksharams.
There is lot of scope of improvising this particular korvai. In the diagram, I have drawn two lines, vertical and horizontal. The uthrangam (finalpart) of the korvai can be played either horizontally or vertically, since the average is 18.
Next we will see about harishankar's thisram.