Filmmaker Imtiaz Ali said people in the recording studio started crying when AR Rahman and lyricist Irshad Kamil started composing 'Amar Singh Chamkila' song 'Vida Karo'. "Rahman joked, 'What have you done Irshad Kamil? You are making people cry'," he recalled. Imtiaz added that Rahman started composing the song at 2:30 am and asked them to switch off the lights.