Karan Mehra and Nisha Rawal are all set to tie the knot on 24 November (2012) in Delhi. And preparation for their grand wedding is in full swing. Karan and Nisha’s close industry friends are planning something big is what we hear. A source close to Karan Mehra told us that Munisha Khatwani, Mouni Roy and Kishwer Merchant will perform for the Sangeet of Karan and Nisha. A few more industry friends are likely to join them in the act. The buzz is that all are busy rehearsing for the big day (sangeet) which is on 23 November (2012). Our source tells us that Munisha, Mouni and Kishwer are very close friends of the duo and they will leave no stone unturned in making the sangeet special. They are believed to be performing on a medley of songs. We tried calling Mouni Roy, but she remained unavailable. Munisha Khatwani maintained her silence and refused to talk. Guess the countdown to marriage begins for the lovey-dovey pair Karan and Nisha.