I agree- similarly, the song kodiyethuvom from Pithamagan builds to a crescendo with nadashwaram. Every time I finish hearing that song, you would need a few minutes to recover from that crescendo.

Regarding irir's comments on the mood of the character, the song 'anandham anandham' from Pootadha Pookal - the tune and the orchestration will convey the happiness. Similarly, the song 'Ayya Ayya Do, Naan Appan aanen Doi' from Siva conveys the pride and happiness of a father with a newborn so aptly.