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A partial capo is a type of a capo designed to capo only some of the strings of an instrument. This may appear to have a similar effect to alternate tunings, but there are differences. A common example is a capo which covers the top five strings of a guitar, leaving the bass E string uncapoed. When played at the second fret, this appears to create a drop D tuning (where the bass E string is detuned to a D) raised one full tone in pitch. In fact, these are often marketed as "drop D capoes". However, this affects only the open tuning of the strings, and thus, when used at the second fret, an E chord using the "D shape" will have the "Drop D sound" with a low E note. However, a G-shape chord can be played as well, as the fretted E string will not be affected as it would be if the string was retuned. ==Background== For centuries, guitarists have used capos to clamp across all the strings of the guitar, to raise the pitch of all the strings. This is done to change to a brighter timbre of the guitar or to transpose the music to a higher-pitched key. Guitarists have also used many alternate tunings to change the musical possibilities and the pitch of the open (unfretted) strings. Recently, guitarists have begun to use capos that only clamp some of the strings, usually called a "partial capo," which offer similar options to guitarists as alternate tunings, with drone strings and new chord voicings. Although partial capos are most commonly used in standard tuning, creating "simulated" open tunings, they are also used in combination with many different tunings, and are also combined with other full and partial capos. A number of manufacturers incorrectly call them "open tuning" capos. What they do for the guitar resembles what a tuning does, but the open strings are changed by varying the length of the strings and not the pitch. The first partial capo released, in 1976, was called the "Chord-Forming Capo". It was invented by Lyle Shabram, and called "A Tool For the Creative Musician." Harvey Reid and Jeff Hickey started the Third Hand Capo Co. in Nashville, renaming Shabram's invention "Third Hand Capo". A popular style of partial capo is the "Esus" style, which clamps the A, D, and G strings of a guitar.〔 When placed upon the second fret, it forms an Esus chord, and when turned upside down, it forms an A chord. Now, there are about 15 types of devices on the market that clamp anywhere from 1 to 5 strings. A number of players have made their own custom versions by cutting or otherwise modifying existing capos. The devices do a variety of things, though not all of them will fit all guitars. The Third Hand Capo and the SpiderCapo (appearing in 2008) are the only universal capos.〔 Each can clamp any of the 63 combinations of strings at any fret of any guitar, although only the SpiderCapo can produce any combination at a given fret without repositioning the capo. Shubb and Kyser each make a 3-string "E-sus" capo as well as a 5-string "Drop-E" capo. The Esus capo creates a sound similar to the popular DADGAD guitar tuning. Woodie's G-Band capos clamp 1 or 2 outer strings, and Kyser now makes a series of "K-Lever" capos that incorporate a spring lever to allow temporary fretting of some notes that lie under the capo. 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「Partial capo」の詳細全文を読む スポンサード リンク
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