"I didn't choose the song, the song chose me. I am a fan of Ekta (Kapoor) and I respect her a lot. When I got a call to sing the song, I was sure about singing it," the 53-year-old said here Saturday at a press meet of the film.
"I found it very catchy and it has been made for me. The reactions that I am getting are also good," he added.
"Tarzan" is composed by Parichay.
Anu's daughter Anmol has sung the female part of the song and he says the film's team loved her voice, which is why they chose her.
"This was not planned. When they heard Anmol's voice, they wanted her. I told her, 'You are a professional singer, so go for it'. People who heard her voice have loved it and I am glad that she is getting work on her merit," Anu said.
"Kuku Mathur Ki Jhand Ho Gayi", directed by Aman Sachdeva, is a co-production by Ekta's Balaji Motion Pictures and Bejoy Nambiar.
Releasing May 30, it stars newcomer Siddharth Gupta, former Miss India Simran Kaur Mundi and Ashish Juneja.