The song, titled "Apna Bombay talkies", has been choreographed by Vaibhavi Merchant.
Others who will feature in the song are Priyanka Chopra, Farhan Akhtar, Shahid Kapoor, Ranveer Singh, Ranbir Kapoor, Imran Khan, Sonam Kapoor and Deepika Padukone, Anil Kapoor, Sridevi, Akshay Kumar, Karisma Kapoor and Juhi Chawla.
Around 20 singers have also come together to lend their voices for the actors, said a source.
"For the first time, 20 singers will be part of the same song. The title track has been sung by some of the most reputed singers in the industry. And the interesting part about this is that the singers have recorded for those actors whom they generally do the playback singing for in their movies," the source added.
Some prominent singers, who have sung the track, are Sunidhi Chauhan, Shaan, Kavita Krishnamurthy, S.P. Balasubramaniam, Abhijeet, Kumar Sanu, Alka Yagnik, Mohit Chauhan, Sonu Nigam, Sudesh Bhonsle, Shreya Ghosal, Shilpa Rao, Udit Narayan, KK and Sukhwinder Singh.
The source said: "Vaibhavi has beautifully choreographed this number. There was a strict dress code for all the actors. All the men had to wear black tuxedos and the women wore gold outfits, designed by their own stylists. The song took over a month to be shot entirely as all the actors have independently shot for their parts."
"Bombay Talkies" is an amalgamation of four short films by four filmmakers - Zoya Akhtar, Anurag Kashyap, Dibaker Banerjee and Karan Johar. The movie releases May 3 and it will also be screened at Cannes film fest this year.
