Suresh65, I agree...the rhythms are pretty complex in this soundtrack. That is what struck me first because I had a hard time keeping track (both Chitra's and Hariharan's songs). Overall, I think you need time to digest this album because there is so much to it that it might not be evident in the first few listens.
I also see Plum's point about the ludes being functional compared to the past where the ludes were what I looked forward to, knowing that there will be magic. In the past, there has been a number of times when I have skipped the song after the second lude. :-) Of course, even now, there are cases where that magic still exists (Pazhassi Raja song...Odathanil, second interlude)
Again, Raja's style has changed...but there is a lot to enjoy and relish in this too.