Lakeer's 'Paighaam', A Typical A. R. Rahman song? Options

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Hope everyone here has heard this new Shaan & Kavita song 'Paighaam' from the upcoming movie 'Lakeer', picturized on that 'Saaya' guy, John Abrahams & Nauheed Cyrusi.
Music by A. R. Rahman & lyrics by Mehboob. It sounds like the Sonu-Anuradha number from 'Pukar' picturized on Anil & Madhuri in Alaska ... the lyrics to which were, 'kismet se tum humko milay ho'.

Is this some special type of song/raag? It has a very mellow and soft feel to it. And this is the second time that he has made this type of song.

Now how do I attach a file over here. No options available.