Bang Bang The Song | Bang Bang Title Song LAUNCH was launched by actors Hrithik Roshan & Katrina Kaif at a grand event yesterday evening. Check out the duo's sizzling chemistry and interview at the song launch. For more Bollywood news and gossiphttp://www.youtube.com/user/bollywoodbackstage?feature=mheeSubscribe at http://www.youtube.com/subscription_center?add_user=BollywoodBackstageLike us on Facebookhttp://www.facebook.com/bollywoodbackstageFollow us on Twitterhttps://twitter.com/#!/BollywoodBstage