I think nowadays A.R.Rehman is not at all interested in his old style.he always tries for the new outputs.The statement in the review is very true that his recent songs are become more popular only after the release of the movie.Now he tries his best to give justice to the script than the trend in the music industry.His last tamil film Sillinru oru kadal also features this style.We can't expect a song like Mumbai vaa sung by shreya ghoshal in a recent tamil movie.
