Raja's songs are so complex in orchestration - especially those from his early years, where he has used any instrument that he can think of or grab of:-) That included instruments not only from our villages but those from around the world...
This leaves the listener (and often orchestras) confused as to what is this instrument at some particular points of many songs...
DF'ers are encouraged to post such doubts in this thread...and the musically hi-tech (knowledgeable) DF'ers are requested to reply identifying the isaikkaruvi....