gAnam mailEri :On the beautiful peacock(he rides)
kailASam tannai :Kailash
shuzhala varum: Spins around (Kailash)
iLaiyavanE: The Younger Son( Ganesh being the first)
tozhuvAr: those who pray to
tALa: vidham para : Proficiency in rhythm or beat
uDaiyavanE: the owner of (has it)
I found this explaination for the song. Can somebody throw more light on this. Also can you pls. let me know the mudra for Younger son.