[2] The title track of Kal Ho Naa Ho directed by Nikhil Advani and written by Karan Johar, the music video features Aman (played by Shah Rukh) imagining himself in Rohit's (Saif Ali) place, romancing Naina (Zinta), and wistfully sings of life's unpredictability and making the most of life.
The theme of the song was composed by Loy Mendonsa of the Shankar-Ehsaan-Loy trio[3] and Shankar Mahadevan arranged the groove.
Instead of opting for some other singer, Karan Johar decided to wait for a month before Sonu came back and recorded the song for the movie.
The jury was composed of celebrities such as Gulzar, Hariharan, Javed Akhtar, Kumar Sanu and Shantanu Moitra.
[10] In 2015 the German ambassador to India Michael Steiner released a video paying homage to the song, under the name Lebe jetzt!.