Life in A... Metro touched upon it, but only briefly. The 'it' in question is call centers, which actor-turned-director, Atul Agnihotri is making a film on.

Based on Chetan Bhagat's bestseller, One Night @ The Call Center, the film titled Hello, stars Sharman Joshi, Gul Panag, Sohail Khan [Images], Ishaa Koppikar, Amrita Arora [Images], Arbaaz Khan [Images], Sharat Saxena and Dilip Tahil.

Salman Khan [Images] and Katrina Kaif [Images] are rumoured to be putting in a guest appearance.

Apparently, Zayed Khan [Images] and Celina Jaitely were part of the initial star cast but had to opt out because of date problems.

Produced under the banner of Reel Life Productions, the film's dialogues are written by Bhagat, who shares screenplay credits with Agnihotri. 

Unlike the book, the film has four songs, one of which features Russian dancers in a nightclub, and is sung by Daler Mehndi [Images] and Sunidhi Chauhan.

Apparently, Daler Mehendi was so happy with the final product that he refused to take any fee for the song. His gesture was reciprocated with a Tag Heur watch.

Sajid Wajid will compose the songs for the movie.

Bosco and Ceasar will choreograph the songs. "We are doing segmented songs -- one is a commercial song while another is a mood piece," Bosco says.

For the nightclub song -- more of a jazz than a hip hop number -- the choreographers used about 70 to 80 dancers plus some 200 extras to create the club atmosphere.

"We are doing these four songs in two schedules and are making a special appearance in one of the songs," the duo piped in.