what is a sectional composition
The term musical form (or musical architecture) refers to the overall structure or plan of a piece of music, and it describes the layout of a composition as divided into sections.p above the world so high, like a diamond in the sky. However, in the verse below, there is a rhyme repeated in the second line, then a variant in the third line, two half-lines sharing a new rhyme, followed by a final return to the first arrangement in the last line (AABA), and thus its organization is song form.