Director Siddharth Anand is shooting a promotional video for his film 'Bachna Ae Haseeno' with Ranbir Kapoor and likens it to reliving a melodious past.

The title of Siddharth's film is taken from the 1980s chartbuster from the film 'Hum Kissi Se Kam Nahin' and retains the original song's opening.

'We have used the song from 'Hum Kissi Se Kam Nahin' by Kishore Kumar at the beginning of the track. Then we got Kishore and Leena Chandavarkarji's son Sumeet to sing the rest of the song as an original composition. So it'd be quite an emotional and nostalgic trip. Kishoreda's son sings for Chintuji's son, ' Siddharth told.

Siddharth said that the rest of the track has been completely re-worked by Vishal-Shekhar.

'It's not a remix at all. The track takes off from the original in a totally different tangent. We had taken a conscious decision not to use the song unless it turned out as special as we wanted it to be. We are really proud of the outcome, ' added the director of the hit romantic comedy 'Salaam Namastey'.

And yes, for nostalgia's sake, yesteryears dancing star Rishi Kapoor may team up with his son Ranbir to shake a leg 'though I'm too scared to ask him (Rishi) as yet, ' laughed Siddharth.

Producer Yash Raj Films is going the extra mile to promote this romantic comedy.

'The only time Yash Raj has done separate music videos for their films is for 'Dhoom'. It's the project that determines the promotion. I think we had a great title song and it was waiting to be used as a music video, ' said Siddharth.

Siddharth will shoot it with choreographer Ahmed Khan.

'All of us - Ranbir, Bipasha Basu, Minissha Lamba, Deepika Padukone and Ahmed - are getting completely engrossed in shooting the video.'

Interestingly, Ranbir tried to sing his father's song but gave up the idea.

'We did try Ranbir's own voice for the track. He does have a great singing voice. But we were in a hurry and we didn't want to make it overly gimmicky. I think I'll keep Ranbir's singing for posterity.

'I'm actually really nervous about 'Bachna Ae Haseeno'. Everyone talks about his film being different. So I'm hesitant to use that word. Like 'Salaam Namastey', 'Bachna Ae Haseenon' is a true blue romantic comedy. But I'm confident. Ranbir is exceptionally talented.'