Katrina Kaif will make her debut as playback singer in YRF production 'Mere Brother Ki Dulhan.' Having tormented us with her good looks so far, she will now throw in her seductive voice! According to a Mumbai Mirror source, Katrina's co-star in the film, singer Ali Zafar, deserves the credit for getting Katrina to sing.

"Katrina was not really in the mood to try out something new. She has just started to get a grasp over her spoken Hindi. It was Ali who convinced her," said the source. Katrina has reportedly sung one of the four tracks composed by Sohail Sen, the other three having been sung by Ali Zafar.

Katrina's character in the film plays guitar, which Zafar helped her learn. Zafar used to carry his guitar to the set and practice in his free time. Katrina was often seen taking lessons from him. Zafar says Katrina will feature on his next album. "Yes, Katrina is very sweet and told me she would be a part of my album. I carry my guitar on the sets and she too is learning the basics. She will probably play it for my album."In the film Katrina plays Ali Zafar's wife. The Ali Abbas Zafar helmed film additionally stars Imran Khan who plays Ali Zafar's brother.