Song Composed just on 3 notes/Raga... by Ilayaraja 8) 8)
http://www.youtube.com/v/EwGeHvOCxfQ&feature=player_embedded#!
This song is one among the few masterpieces of Ilayaraja.
The song is composed by 3 notes SA-RE-GA in carnatic & C,D,E in western.
See how catchy the tune is...marvelous!
Also see his orchestration. 8) 8)