Johannes Brahms
In Vienna he soon made many friends who liked his music. For a short time he was director of a choir called the Vienna Singakademie, who sang some of his compositions. He met Wagner. Wagner was afraid that Brahms would start to write operas which would be more famous than his own. So Wagner wrote an article saying that Brahms was a very bad conductor. Wagner had made himself an enemy of Brahms, who never did write any operas anyway.