Director Pradeep Sarkar, who is introducing his son Ronit Sarkar as a playback singer in his forthcoming film "Lafangey Parindey", reveals that he was unaware of his singing talent until he heard him live in a music concert.

Ronit has lent his voice to the title track of the film.

"I didn't know such a good singer was growing in my house. I had seen him playing guitar, sometimes humming some tune, but I never lent ear to that very seriously. He has a small band.

Once he was performing somewhere and I decided to go and see what he does. To my surprise, he was singing so well that people were clapping and whistling on his performance. He was singing very well, " says the proud father.

"I made him sing in a couple of my ads, he was fantastic. Anandh (music director) was looking for a fresh voice, one who could sing in high pitch and modulate well between the notes. He chose him for the song, " Sarkar told in an interview.

The director, who has given films like "Parineeta" (2005) and "Laaga Chunari Mein Daag: Journey of a Woman" (2007), has teamed up with Deepika Padukone, Neil Nitin Mukesh and other actors to present the story of a group of youngsters living in the backstreets of Mumbai.

"We heard a verse 'Kabhi saaf, kabhi gande, lafangey parindey' and from that we fell in love with the phrase 'lafangey parindey'. Lafangey means wild and parindey as we all know means birds. Together it means the flight of a bird. The film is about hope, " said Sarkar.

It was reported that in the film Deepika and Neil utter some swear words in keeping with the backdrop of the film, but the director puts off such speculations.

"There is no offensive language used in the film. Those used are the colloquial words which are invariably used by people of that society. Basically, I didn't get away from the language that is there. There is a phrase called magic reality, I have tried to evolve that, " Sarkar added.

Talking about the leading lady of the film, Sarkar said: "Deepika never takes anything as an obstacle. However difficult things get, she always gives her best with a smiling face. That's the first interesting quality that you notice about her, she is always smiling. She is always ready to do whatever is asked for the role."

However, Sarkar doesn't quite share the same views about her male counterpart. "Neil is a sober guy, but every moment he is into some mischievous stuff. During the shooting of the film, he used to do his own make up, practise a lot for his fighting sequences and other times used to play pranks on crew members. So the lafanganess (wildness) is in-built in him."

"Lafangey Parindey" hits the theatres Aug 20.