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In music, a barre chord (also known as bar chord or rarely barr chord) is a type chord on a guitar or other stringed instrument, that the musician plays by using one or more fingers to press down multiple strings across a single fret of the fingerboard (like a bar pressing down the strings). Players use this chording technique to play a chord that is not restricted by the tones of the guitar's open strings. For instance, if a guitar is tuned to regular concert pitch, with the open strings being E, A, D, G, B, E (from low to high), open chords must be based on one or more of these notes. To play an F♯ chord the guitarist may barre strings so that the chord root is F♯. Barre chords are sometimes called "moveable" chords,〔 as the player can move the whole chord shape up and down the neck.〔Moore, Allan. "The So-Called 'Flattened Seventh' in Rock", p.200n17, ''Popular Music'', Vol. 14, No. 2. (May, 1995), pp. 185-201.〕 Commonly used in both popular and classical music, Barre chords are frequently used in combination with "open" chords, where the guitar's open (unfretted) strings construct the chord. Playing a chord with the Barre technique slightly affects tone quality. A closed, or fretted, note sounds slightly different sound than an open, unfretted, string. Using the Barre technique, the guitarist can fret a familiar chord that is usually played with open strings, and then transpose, or raise, the chord a number of half-steps higher, similar to the use of a capo. For example, if a guitarist plays an E major and wants the next chord to be an F♯ Major—barring the open E major up two frets (thus two semitones) from the open position produces a barred F♯ Major chord. == Etymology == The term comes from the method of using the index finger to form a rigid "bar" across all of the strings. The specific spelling "barre" has two alternate proposed etymologies. One theory states that "barre" comes from Spanish, as the guitar historically originated in Spain. The other explanation is that the spelling "barre" distinguishes the term from the spelling "bar" that traditionally represents a measure, and that "bar chord" might generate confusion. 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「Barre chord」の詳細全文を読む スポンサード リンク
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