The debut Bollywood song of Internet sensation Ranu Mandol features in Himesh Reshammiya's upcoming film Happy Hardy And Heer. The song titled Teri Meri Kahani composed by Himesh Reshammiya has been sung by himself along with Ranu Mandol.

Ranu Mandol, who sang for a living at the Kolkata railway station, was recorded by a passerby crooning “Ek pyaar ka nagma hai”. In no time, her video went viral with many comparing her voice to Lata Mangeshkar. Wanting to encourage and support her talent, an NGO gave her a makeover and TV show Superstar Singer also welcomed her in one of its episodes. That’s where Superstar Singer judge Himesh Reshammiya offered her the big break.

Happy Hardy and Heer is an upcoming Bollywood romantic comedy film directed by Raka and  produced by Deepshikha Deshmukh and Sabita Manakchand. Himesh Reshammiya has worked on the film's story and music. Himesh plays the lead role while Punjabi actress Sonia Mann plays the leading lady.