In music, kind describes how the general construction or system of a music or piece of music,[22] and it describes the structure of a composition as divided into sections.[23] While in the early twentieth century, Tin Pan Alley music and Broadway musical songs have been usually in AABA 32 http://edwinfhgeb.bloginwi.com/19870997/the-smart-trick-of-audio-equipment-rental-that-nobody-is-discussing