There’s an air of expectation in the Johannesburg City Hall as the audience settles down prior to the arrival of the evening’s star attraction, Sergei Nakariakov. An attractive dark-haired young man in trendy clothes, Nakariakov looks as if he could be a contestant in Idols. But he is no short-term pop sensation. The young Russian trumpeter has been hailed as a musical genius in the class of Paganini and Caruso.