Guru Dutt shoot for this film and after his sudden demise Dharmendra played his role.
Sunil Dutt was offered the film after Guru Dutt died. But Guru Dutt had dropped Sunil from his shelved production Raaz. Sunil Dutt held a grudge over this and declined Baharen Phir Bhi Aayengi.
S.D.Burman was originally the music composer of this movie. But after he got sick, Guru Dutt could not wait, so he took O.P.Nayyar.
All the scenes which were shot when Guru Dutt was alive, those scenes were retained in the second version. But those scenes which Guru Dutt did not participate. Even the Asha Bhonsle song Woh Hanske Mila Humse......was shot by Guru Dutt himself on Mala Sinha and was retained in the Dharmendra's version.
Geeta Dutt used to sing in every production of her husband Guru Dutt. But in this film all the songs were sung by Asha Bhonsle.