Dear Ramaswamy,
Both the songs that you had mentioned were indeed picturised and included in the respective movies. Kannethire thondrinal in Iruvar Ullam appears during the first night sequence of NT - Sarojadevi. The song has the inimitable majestic walk of NT.
Ohoho Manidhargale is the opening song/scene of Padithaal Mattum Pothumaa where NT would be seen riding a horse. Again it would be style personified.
Surprised that you had not watched the movies.
Regards