Could Sinhala Rock?

I just finished watching Rock On, which is quite a good hindi movie about four guys and a band. I dont think I like the music all that much, but generally there is a decent hindi rock scene. I'm wondering why there aren't any(?) Sinhala Rock bands. Does certain languages sound better in rock than others? I wonder. But listening to songs like the Nadee Ganga Tharanaye by Chitral Somapala (Lion beer ad.) one would think not. But I wonder..