 Complete the following phrase:  Kajanus had a decisive impact upon the development of the career of Jean Sibelius. He was considered an authority on the interpretation of Sibeliuss music, and he and Sibelius were close friends; but this was compromised in 1898 when Sibelius was appointed to a university post for which Kajanus was himself a candidate. Kajanus appealed, and the decision was overturned. But they reconciled for the orchestras tour of Europe in 1900, where they appeared at the 