"We have shot one song and the thing I was most scared of is coming true - that I am unable to dance properly," the 39-year-old said here Sunday on the sets of the movie, in which he plays Balwinder Singh.
However, Punjabi singer Mika, who also plays a character of the same name in the film, is finding it easy to dance.
"Dance and videos are not very tough because we do a lot of dance shows. So we are not camera shy, we have done a lot of TV shows and reality shows," Mika said.
"The only difference is that we dance for two hours on the show but here we are dancing from seven in the morning and are completely exhausted," he added.
Talking about his look in the film, Mika said: "My look is of a rough Punjabi who comes from Punjab and wants to become famous."
Directed by Sunil Agnihotri, 'Balwinder Singh Famous Ho Gaya' also stars Miss Brazil 2011 Gabriela Marcelino.