Guess these must have been discussed here earlier - how ARR reuses his own tunes ....but this blogger has merged couple of ARR tunes to that effect http://rameshonmusic.blogspot.com/2009/03/some-arr-pieces-repeated.html
I would especially recommend the latter part where he has merged Usilampatti (Gentleman) and Chandralekha (Thiruda-Thiruda) to show the similarity. -- -A http://viewsnmuse.blogspot.com

