GCSE / A level Music. Breaks down how a scale is formed, how to write major and minor scales - including introduction to modes, key signatures, why they are used and how to work the key of a piece of music. Chart showing Key sigs up to 4 flats and sharps. Extra sheet on TEXTURES - Homophonic, Polyphonic, Heterophonic, Contrapuntal, Monophonic. Explained graphically and descriptively.