The document discusses tonality in music. It defines key terms like major, minor, modal, tonal, modulation, and dominant. It notes that exam questions may ask about the tonality of a piece, which could be answered with a single word like major, minor, or modal. Examples of pieces in major and minor tonality are provided. Modal music is described as using modes that sound like notes are missing. Modulation is described as a change in key, often to the relative major, relative minor, or dominant key.