6(Faber Piano Adventures ). The 2nd Edition Level 2B Lesson Book offers a systematic approach to scales, primary chords (I, IV, V7), and transposition for the keys of C, G, and F major. This new edition features nine new songs, plus enhanced arrangements of favorite pieces from the first edition. The new "Scale and Chord Adventures" appendix offers teachers the flexibility to explore major and minor scale and chord patterns in all twelve keys.