4 min readNew DelhiFeb 24, 2026 09:54 PM IST The recently unveiled promo of KH X RK, which marks Kamal Haasan and Rajinikanth’s on-screen reunion after 47 years, has already created a wave of nostalgia among fans and composer Anirudh Ravichander says the moment felt just as special behind the scenes. Anirudh Ravichander on going with retro music for promo Speaking to CNN News18 about working on the promo, Anirudh revealed why the team chose retro music instead of their usual high-energy mass sound. “We have done a lot of mass music for Kamal sir and Rajini sir in films like Vikram and Jailer, among others. So we were like what else we can do. So we tried to go retro and bring back the 70s. It’s all about balancing,” he said. On shooting with Kamal Haasan and Rajinikanth The promo shoot itself turned into a once-in-a-generation moment for Anirudh Ravichander and director Nelson Dilipkumar as both of them shared screen space with Kamal Haasan and Rajinikanth. “Nelson Dilipkumar and I both were feeling very …