Johannes Brahms was on vacation when the melody for his Third Symphony came to him. He cancelled the rest of his trip and spent four months penning the piece (a contrast to the 20 years he took to write his First Symphony). The Cleveland Orchestra performs the Third Symphony today at 11 a.m. at Severance Hall. Additional performances take place at 8 tonight and at 8 tomorrow night. Consult the orchestra's website for ticket prices. (Niesel)