Editing Thirty-two-bar form (section)

== Basic song form ==
At its core, the basic AABA 32-bar song form consists of four sections, each section being eight bars in length, totaling 32 bars. Each of these eight-bar sections is assigned a letter name ("A" or "B"), based on its melodic and harmonic content. The A sections all share the same melody (possibly with slight variations), and the recurring title lyric typically falls on either the first or last line of each A section. The "B" section musically and lyrically contrasts the A sections. The "B" section may use a different harmony that contrasts with the harmony of the A sections. For example in the song "I've Got Rhythm", the A sections are in the key of B{{music|flat}}, but the B section involves a [[circle of fifths]] series of [[dominant seventh]] chords going from D<sup>7</sup>, G<sup>7</sup>, C<sup>7</sup>, to F<sup>7</sup>. Song form terminology is not standardized, and the B section is also referred to as the "[[middle eight]]", "[[Bridge (music)|bridge]]", or "primary bridge".<ref name=":0" />

The song form of "What'll I Do" by Irving Berlin is as follows:
:{| class="wikitable"
!Name
!Lyric from "[[What'll I Do]]" by Irving Berlin
|-
| align="center" | A<sub>1</sub>
|What'll I do when you are far away and I am blue? What'll I do?
|-
| align="center" | A<sub>2</sub>
|What'll I do when I am won'dring who is kissing you? What'll I do?
|-
| align="center" | B
|What'll I do with just a photograph to tell my troubles to?
|-
| align="center" | A<sub>3</sub>
|When I'm alone with only dreams of you that won't come true… What'll I do?
|}