There is so much EMOTION in the Humari Adhuri Kahaani songs...like every song makes your heart FULL...and no wonder they manage to use all these songs on MaNan despite the fact that they aren't a "mature" love story of that sort...but they nail those deep expressions so well that they JUSTIFY the beautiful melodies and LYRICS so well.
Like I can so imagine Manik justifying the lyrics of Hasi if he sang it to Nandu..."Har safar har jagah, har kahin ban gaye...maante the khuda aur haan wohi ban gaye...haan hasi ban gaye, haan nami ban gaye...tum mere aasmaan, meri zameen ban gaye"