Symphony Themes, Opera Gems and Classical Favorites. The melodies of Bach, Beethoven, Brahms, and other master composers are arranged at just the right level for adult beginners and for those who are returning to the keyboard. Section 1 features piano arrangements with minimal hand position changes, and many selections include an optional duet part. Section 2 introduces the I, IV, and V7 chords in the key of C major, harmonizing themes such as Sibelius's Finlandia, Schubert's The Trout, and Mendelssohn's Spring Song. Section 3 presents the primary chords in the key of G major, with arrangements of Vivaldi's Autumn (from The Four Seasons), Mozart's theme from The Magic Flute, Lizst's Liebestraum, and more.