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The eleven-string alto guitar or altgitarr is an extended-range classical guitar developed by Swedish luthier Georg Bolin in the 1960s. Original Bolin instruments are now rare and valuable.〔(''Georg Bolin's 11-string alto guitar for sale'' ) by Kurosawa Gakki〕 The Bolin alto guitar most often has eleven strings, but Bolin also made a thirteen-string version. The 11-string alto guitar is a ''multi-string classical guitar'', which generally refers to classical guitars with more than six strings. Classical guitars with extra strings can have from seven to 13 or more strings.〔(''16-string guitar'' ) by Philip Woodfield Moore〕 However, an 11-string is the most useful for performing lute music, particularly Bach and Weiss. The first six strings are tuned in the same intervals as the normal classic guitar. Therefore, a musician can play with conventional fingering on those strings. In the United States, luthier Walter Stanul makes performance instruments ranging from 11 to 13-strings called the (Archguitar ). The design and the body shape of this guitar is similar to the vihuela, and thus it is fundamentally different from the Bolin design.〔(''Archguitar shape'' ) by Archguitar.com〕 ==History== Georg Bolin first constructed 11-string alto guitar with collaboration with Swedish guitarist Per-Olof Johnson in 1960s. Johnson is the teacher of a well-known guitarist Göran Söllscher who made this instrument famous through his extensive usage of Bolin's 11-string alto guitar.〔(''Göran Söllscher's profile'' ) by allmusic.com〕〔(''Göran Söllscher's discography'' ) by Deutche Grammophon〕 Johnson was fond of lute music, but the difference in playing techniques between guitar and lute is significant, and he was looking for a way to play lute music using guitar playing technique. Thus, the design goal was specifically to be able to play renaissance lute music directly from original tabs using guitar playing technique. This design introduced two main elements. The first was to provide conventional lute tuning by tuning the first six strings a minor third higher (hence the name "alto guitar"). It is equivalent to putting a capo on the third fret of the normal prime guitar. The second element was to add five extra strings to accommodate low notes. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Eleven-string alto guitar」の詳細全文を読む スポンサード リンク
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