In music (especially western pop music), the bridge is a comparative part, which prepares for the restoration of the original material. Among them, the original material or melody is called "A" section, and the number of bridges can be 38? This phrase is in the form of 32 bars (in the B key of AABA), or it can be used loosely in the chorus form, or in the compound AABA form as a comparison with the complete AABA voice.
This word comes from the German Steg Bridge, which was used to describe the transitional period of medieval bar form in Meistersingers from 15 to 18 century.
The word German was widely known by the musician Alfred Lorenz in the1920s. He studied in detail the adaptation of Richard Wagner's bar form by the neo-medieval opera popular in the19th century.
This word entered the English dictionary in the 1930 s, and was translated as a bridge between composers who fled Nazi Germany and worked in Hollywood and Broadway, and was used to describe similar transitional parts in their American pop music.
This bridge is often compared with poetry and chorus to prepare for its return. "Part B of the chorus of pop songs is usually called cohesion or distribution."
Extended data:
classical music
Bridges are also common in classical music, and are called specific musical order forms (also called transitions). The formal name is bridging channels, which divide the independent parts of the extended works, or smooth or sharp modulation, such as the transitional theme between the two in sonata form. In the latter case, this transition between two musical themes is usually called "transition theme".
Indeed, in later romantic symphonies, such as dvorak's New World Symphony or Cesar Frank's Symphony in D minor, the transition theme itself almost became the third theme.
The following work also provides some good examples of short bridge smooth modulation. Instead of simply repeating the whole Expo in the original tune, because the symphony will be done in the classical period, Frank repeated the first theme of the third highest minor in F minor. The two-bar bridge realizes this transition through the combination of Frank harmonic and chromaticity modulation characteristics.
After repeating the first theme, another bridge composed of four bars will lead to the transition theme in F major, which is the key to the real second theme.