Actor Simbu might be known totake his own time when it comes to his own films, but he always seems to be available when it comes to lending his voice for others. While a few albums with his songs have already hit music stores this year, there is another one, possibly the last this year, is onits way. This one is for debutant director Prithvi Rajkumar’s upcoming flick titled Naan Rajavaaga Pogiren,which has actors Nakul, Chandini and newcomer Avani Modi in lead roles. “It is a party song in which a group of IT employees, including the lead actors, get together to celebrate over a weekend. With the visuals for the song involving the actors making funof each other, the song will have the lyrics Kalaaipom.. Kalaaipom,” says Prithvi, who has also penned the song. Apparently, it was music director G V Prakash who suggested Simbu’s voice for thesong. This is the second time that the actor has sung for the young music director, after thesong Kutti Pisasae in Kaalai.The song was recently recorded and Prithvi says he was amazed by Simbu’s grasping skills. “He dropped in directly from the shooting of his film Vaalu even without changing his costume. He listened to a rough version of the track recorded in GV’s voice just once and sang it immediately,” he says.The audio release function of the film is to be held on December 14 and the chief guest is none other than Simbu’s new-found friend and Kolaveri Di actor Dhanush. Interestingly, this will be the first time that both the actors will be seen together on the same stage in Chennai.