In music, especially western popular music, a bridge is a contrasting section that prepares for the return of the original material section. The bridge may be the third eight-bar phrase in a thirty-two-bar form (the B in AABA), or may be used more loosely in verse-chorus form, or, in a compound AABA form, used as a contrast to a full AABA section.
The term comes from a German word for bridge, Steg, used by the Meistersingers of the 15th to 18th century to describe a transitional section in medieval bar form. The German term became widely known in 1920s Germany through musicologist Alfred Lorenz...