The song's primary strength lies in the contrasting yet complementary textures of its lead singers:

: Her "haunting harmonies" and strong voice modulations add an ethereal layer, described by Reviewers from The Times of India as a perfect match for Singh's vocals.

(often simply called "Duaa") from the 2012 film Shanghai is widely regarded as a modern masterpiece of melancholic Hindi cinema. Composed by the duo Vishal-Shekhar , the track stands out for its haunting emotional depth and vocal brilliance. Vocal Performance

: Delivers a delicate, almost whisper-like performance that turns the lyrics into an intimate confession. This early-career hit helped cement his reputation for "soulful" vulnerability.

: Provides additional vocals that round out the track’s atmospheric quality. Lyrics and Composition