My resource has information on vital music theory required for GCSE Music. It covers the circle of fifths and fourths, the stave, bass and treble clefs, ledger lines, time values, bars, time signatures, beaming notes, triplets, grouping rests, tied notes, tones, semitones, the scale and key of C major, degrees of the scale, accidentals, minor and major keys and key signatures, major and minor scales, intervals, chords, chord progressions, cadences, modulation and tonality. The booklet also contains test yourself questions after each topic.