In the aaba form the a sections are the versesections and the b section is a bridge.
Aaba for mat.
Songs in the aaba format consist of four sections each eight bars long.
Also like the aaba format melody variations and key changes are required to keep songs with this structure from becoming monotonous.
The a section is the main section of the song the verse and it repeats the most often.
In other forms b represents whatever section comes second in the song.
An eight bar a section.
The title is usually placed either in the first or the last line of each verse and is in the same place each time it comes around.
This format can be illustrated as a a b a b a.
As its alternative name aaba implies this song form consists of four sections.
Sometimes a songwriter may feel the need to lengthen the aaba song form by adding another bridge or adding an additional a section.
Send in the clowns has a 6 6 9 8 format.
The b section also referred to as the bridge or middle 8 presents a.
Examining the aaba form.
There are many aaba songs that do not follow the 8 8 8 8 format for example the song send in the clowns has a 6 6 9 8 format.
Sometimes the songwriter lengthens the aaba song form by adding another bridge and a last a section resulting in an aababa format.
There are many aaba songs that don t use the 32 bar 8 8 8 8 format.
The aaba format was the predominant songwriting format in popular music in the first half of the 20th century.
The aaa song structure is not used much in popular music but many children songs hymns and folk songs bear its signature including kumbaya and mary had a little lamb.