Saif Ali Khan and Deepika Padukone in what one may call a hush hush shoot shot the promotional song for their film Love Aaj Kal in Mumbai.

A unit source revealed, "It was a four day shoot in Mehboob Studios in Bandra, Mumbai from 21st to 24th May. A huge set was been erected for that purpose. Both Saif n Deepika participated in it and it was more of a fun shoot as it was also more of a get together for the whole unit."

It is learnt that director Imtiaz Ali and producers Saif Ali Khan, Dinesh Vijan and Eros are so happy with the way the film has shaped up that they've decided to spare neither efforts nor money in its promotion.

Love Aaj Kal is about love today and love as it used to happen in the past. While Saif in the present times plays a cool dude in the film, he enacts the role of a Sardarji in the portions which relate to the times gone by.