"Like you all know about item songs, there is a 'mummy item' song in this film - the mother of items, 'mummy item'," Sajid said here Friday at the music launch.
Wajid added: "The reason is that first time you will hear 'Sheila' and 'Munni' singing together - Sunidhi Chauhan and Mamta Sharma with Bappi Da (Bappi Lahiri)."
It will feature actresses from different regions.
"Five different languages and five different top most heroines of their states are there. That's why we call it 'mummy item'," Sajid said.
The film's director, Sajid Khan, said he wanted "Himmatwala", the remake of the 1983 hit of the same name, to be his debut directorial.
"My first film came in 2007 - 'Heyy Babyy'. But I always wanted 'Himmatwala' to be my first film. I had been writing the draft keeping Ajay (Devgn) in mind. When I closed my eyes and imagined a poster of 'Himmatwala', I can (could) only think of Ajay," he said.
The new "Himmatwala" also features Tamannah, Mahesh Manjrekar and Paresh Rawal. It hits theatres March 29.
