Movie : Chhoti Si Baat
Singers : Lata Mangeshkar
Song : Na Jaane Kyun Hota Hai Ye Zindagi
Lyricist : Pradeep
Actors : Amol Palekar, Vidya Sinha, Asrani, Ashok Kumar
Music Director : Salil Chowdhury

na jaane kyun
hota hai ye zindagi ke saath
achanak ye man
kisi ke jaane ke baad
kare phir uski yaad
chhoti chhoti si baat
na jaane kyun

na jaane kyun
hota hai ye zindagi ke saath
achanak ye man
kisi ke jaane ke baad
kare phir uski yaad
chhoti chhoti si baat
na jaane kyun

jo anjaan pal
dhal gaye kal
aaj wo rang badal badal
man ko machal machal
rahein hain chhal

na jaane kyun
wo anjaan pal
dhal gaye kal
aaj wo rang badal badal
man ko machal machal
rahen hain chhal
na jaane kyun
wo anjaan pal

saje bina mere naino mein
toote re haaye re sapno ke mahal
na jaane kyun
hota hai ye zindagi ke saath
achanak ye man
kisi ke jaane ke baad
kare phir uski yaad
chhoti chhoti si baat
na jaane kyun

wohi hai dagar
wohi hai safar
hai nahi pass mere magar
ab mera humsafar
idhar udhar dhoonde nazar

wohi hai dagar
wohi hai safar
hai nahi pass mere magar
ab mera humsafar
idhar udhar dhoondhe nazar
wohi hai dagar

kahaan gayi shaamein madbhari
wo mere
mere wo din gaye kidhar
na jaane kyun
hota hai ye zindagi ke saath
achanak ye man
kisi ke jaane ke baad
kare phir uski yaad
chhoti chhoti si baat
na jaane kyun

It is a sad number in the voice of Lata Mangeshkar. The song is from the film Chhoti Si Baat. This sad song is picturised on the lead actress of this film Vidya Sinha, when she is missing her boyfriend Amol Palekar.