Eight string guitar

An eight-string guitar is a guitar with two more strings than the usual six, or one more than the Russian guitar's seven. Eight-string guitars are less common than six and seven string guitars, but they are used by a few classical, jazz, and metal guitarists. However, eight strings is the standard for lap steel and pedal steel guitars. The eight-string guitar allows a wider range, or non-standard tunings, or both. Various non-standard guitars were made in the 19th century, including eight-string guitars played by Italians Giulio Regondi and Luigi Legnani. In the 1940s, American lap steel guitars generally standardized with eight strings. Tuning was usually based on either the E9 chord for "Nashville" style or the C6 chord for jazz configurations.