MUSIC THEORY IS FUN Book 2. Maureen Cox presents the theory of music in this revised edition of her best-selling series THEORY IS FUN. Inside you will find the following: Featuring: Major key signatures to 3 sharps and flats; Minor keys to 1 sharp and flat; Degrees of the scale and intervals; Tonic triads; Keyboard, tones and semitones;Time signatures; Grouping notes and rests, triplets; Two ledger lines below and above the staves; Writing four-bar rhythms; Puzzles, quizzes and 10 one-page tests.