He says the song has turned out very well.
"When we approached Madhuri to sing a song in the film, she happily agreed to do so. When she came for the recording, she came with her mom and we discovered her mom is a very good singer. So we asked her mom if she could sing a song. Eventually, we got both Madhuri and her mom to sing a song in the film," Sinha told IANS.
He is happy with the outcome.
"I must say it has turned out very well. Even visually, the song is looking good. We finished our last schedule on March 26. We are planning to release the film by August or September," Sinha said.
The film is said to be inspired by a Gulabi Gang, real gang of girls, headed by social activist Sampat Pal, who raises voice against atrocities towards women.
"Gulaab Gang" is directed Soumik Sen and produced by Anubhav Sinha. The film also features Huma Qureshi and Juhi Chawla.