Dunno Y Na Jaane Kyun (M) - Dunno Y Na Jaane Kyun by Nikhil, Shaan

Dunno Y Na Jaane Kyun (M) - Dunno Y Na Jaane Kyun is one of those rare Hindi tracks that manages to feel both fresh and familiar the moment it begins. Nikhil's arrangement gives the track a layered quality that rewards repeated listening.

There are singers who perform songs and singers who live inside them. On Dunno Y Na Jaane Kyun (M) - Dunno Y Na Jaane Kyun, Nikhil, Shaan clearly belongs in the second group. Featuring Kapil Sharma, Zeenat Aman, Helen, Kabir Bedi, the song carries the weight of the film's emotional arc and delivers it with conviction.

2010 was a strong year for Hindi music, and Dunno Y Na Jaane Kyun (M) - Dunno Y Na Jaane Kyun was among the reasons why. Some music is background. Dunno Y Na Jaane Kyun (M) - Dunno Y Na Jaane Kyun demands attention — not aggressively, but in the way a good conversation does.

Running to 9:26, the song is exactly as long as it needs to be, which is the hardest length for a songwriter to find. It is, at the end of it, a very good song — and sometimes that is the only explanation that matters.