Beethoven was starting to become famous, travelling to places like Prague and Pressburg. He wrote much chamber music. He was, perhaps, a little jealous of the success that Haydn had with his latest symphonies he had written for London. In 1800 he gave his first public concert with his own music. He conducted his First Symphony as well as the Septet. By now several publishers were trying to persuade him to let them publish his new works. Beethoven was becoming famous as a composer. And during this period Beethoven produced his most famous piano sonata: No. 14, in C sharp minor, nicknamed, "Moonlight". This was written for his girlfriend, 16-year-old Giulietta Guicciardi. However, he was far from happy because he realized that he was starting to become deaf. And when he asked for Giulietta's marriage, her parents refused and married her to another 20-year-old man instead.