binary form
musical form in two related sections, both of which are usually repeated (AA′BB′)
thirty-two-bar form
song structure commonly found in U.S. popular music in the early 20th century; consists of 4 sections: an 8-bar A section; a second 8-bar A section, similar to the 1st; an 8-bar B section, with contrasting harmony; and a final 8-bar A section