A resonator guitar or resophonic guitar is an acoustic guitar that produces sound by carrying string vibration through the bridge to one or more spun metal cones (resonators), instead of to the sound board (guitar top). Resonator guitars were originally designed to be louder than regular acoustic guitars, which were overwhelmed by horns and percussion instruments in dance orchestras. They became prized for their distinctive sound, however, and found life with several musical styles (most notably bluegrass and the blues) well after electric amplification solved the issue of inadequate guitar sound levels.