Some months in 1806 were passed in visits. Beethoven stopped at the country-seat of Count Brunswick--and some say that he was in love with Therese, the sister, to whom he dedicated his favorite sonata Op. 78, and that the posthumous love letters were addressed to her. He went to Silesia to see Prince Lichnowsky. There were French officers there who wished to hear him play, and when he refused, the Prince threatened in jest to lock him up. There was an angry scene, and Beethoven, rushing back to Vienna, dashed a bust of the Prince to pieces. The 4th symphony was played at a concert in March, 1807, for Beethoven's benefit. The subscriptions were as liberal as the program, which was made up of two and a half hours of orchestral music. Clementi of London paid him $1,000 down for copyrights. And so he had money and he was cheerful. He worked at the "Coriolan" overture, and, it is believed, the Pastoral and C-minor symphonies. In September the mass in C was brought out under the protection of Prince Esterhazy, who, accustomed to Haydn's music, said to Beethoven, "What, pray, have you been doing now?" Hummel, the Chapelmaster, laughed, and there was no intercourse between the composers for some time. In spite of the failure of "Fidelio," Beethoven looked toward the theatre and offered to supply one grand opera and one operetta yearly at a salary of about $960 with benefit performances, an offer that was rejected. 1807 saw the publication of the "Appassionata" sonata and the thirty-two variations. The pianoforte concerto in G and the Choral Fantasia were performed in 1808. [Illustration: BEETHOVEN. From a pencil drawing by Letronne, made in 1814. It has been engraved by several artists. The above is reproduced from the frontispiece of the original full score of "Fidelio," published in Bonn.]