Ace Telugu filmmaker K Vishwanath, who had always admired films made by K Balachander over the years, says he's extremely happy to be working with him in Kamal Haasan-starrer Tamil comedy, Uttama Villain."In our heyday, Balachander and I always wanted to spend time on each other's film sets. We wanted to learn from each other but it never happened because we were extremely busy back then. I'm glad we are now working together in a film," Vishwanath said.Actor-filmmaker Kamal Haasan managed to rope in Vishwanath and Balachander in Uttama Villain, which is being directed by Ramesh Arvind.Legends Vishwanath and Balachander have made some brilliant films with Haasan over the years such as Sagara Sangamam, Swati Mutyam, Arangetram, Aval Oru Thodar Kathai and Apoorva Raagangal."Kamal convinced us and brought us on board. We enjoyed shooting with actors of this generation," he added.The film's shooting has almost been wrapped up but for some patch work. It is slated to release in September.