This piece is the title score of the movie Captain Prabhakaran and it was also used throughout the movie for grand action sequences. Composer is without any doubt Illayaraja. The grandeur of this piece hit me first when I saw the trailer of 'Makkalaatchi' which was made by the same director R.K.Selvamani who made Captain Prabhakaran. If a composer from India can match up to the grandeur of ‘Their’ orchestral scores, it is Illayaraja.
There were some interesting movies that came as answers, which had similar background scores. May be if I had posted the complete title score, without editing, everyone would have got it right. Here it is, the complete title score,