The document defines and describes different musical genres. It discusses vocal genres like choral music and opera, instrumental genres including pure and descriptive music, and combined vocal and instrumental genres found in pop and rock. Religious genres are divided into liturgical music like Gregorian chants and non-liturgical music such as Christmas carols. Profane genres include popular folk and light music as well as cultured classical music. Other genres are functional, cinematographic, theatrical, and advertising music.