Veteran kollywood film maker Rajeshwar launched his son Ranjan as the lead of 'Thideer Nagaril Oru Kadhal Gaana' on Friday. The flick will be directed by Rajeshwar himself. The launch function was attended by top kollywood celebrities and film makers. Kollywood actress Simran was also seen at the function. The flick is the tamil remake of the Hindi flick 'Ajab Prem Ki Ghazab Kahani'. The flick will be produced by Icon entertainment and will be promoted by J Rajmohan Pillai of the Beta Empire.