The Bridge (brɪ́ǰ) is the piece of the guitar that holds the strings to the body of the guitar and provides a base upon which vibrations bounce before being transmitted into sound. The bridge is positioned perpendicular in relation to the strings and can affect both a guitar’s tone and pitch. Typically constructed from a single piece of wood, the bridge is generally fixed in place. Although some electric guitars utilize a tremolo bridge, which is metal and can be easily adjusted, most bridges are fixed in place and should only be adjusted by a luthier (guitar expert).