"Har Ghadi Badal Rahi Hai Roop Zindagi" is a touching song from the movie "Kal Ho Na Ho," released in 2003. 

It was created by the music team Shankar-Ehsaan-Loy and has lyrics by Javed Akhtar that talk about how life is always changing. 

Sung by Sonu Nigam, the song expresses hope and strength. Its melody is great for playing on the flute, letting musicians show different emotions and skills.