Ying Ying Ng / Margaret O'Sullivan Farrell Book 3 introduces the concepts of key, key signature, scales, triads, tones and semitones in a novel and exciting way: each key is a group of characters or objects with note-names (i.e. a band, a birthday party, a clothes-line with garments). Certain notes belong, while all other notes (accidentals) are outsiders. Transposition is a natural outcome of this concept, with a tune moving from one group to another. The child masters eight new notes (up to High G and down to Low F), which facilitates the playing of more adventurous repertoire. The semiquaver, semiquaver rest, dotted crotchet and dotted quaver are introduced, and tempo markings are now in Italian. As in the previous two books, ensemble-playing is encouraged.