A. R. Rahman can be attributed to changing the Indian Music scene Single handledly.. In my opinion, the biggest difference between Rahman and the rest of Indian composers is that he produces Unique Indian Music using Western Intruments and the rest attempt to produce Western music using Indian Instruments and Rahman, by far is the most successful in that..
No other Music Director in History has been able to produce hits at such consistent pace for such a long span of time.. He has beaten all records in History already, even Madonna's and Michael Jacksons sales record..
In most cases, even a dumb film with no story line has been a super hit because of his Background Score and songs..
Even though there are better soundtracks than this, created by him, this can be considered a baseline for the little Maestro of Madras !!
All the very best A. R. Rahman...