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Drop D tuning, also known as DADGBE, is an alternate, or scordatura, form of guitar tuning — specifically, a dropped tuning — in which the lowest (sixth) string is tuned down ("dropped") from the usual E of standard tuning by one whole step / a tone (2 frets) to D. == Uses of drop D tuning == In drop D the three bass strings form a D5 power chord, which can be shifted up or down the fretboard with a single finger to produce a power chord. Drop D tuning is frequently used in heavy metal and its various incarnations, as guitarists in these styles often need extremely fast transitions between power chords. The tuning has also been used in many other styles of music, including blues, country, folk, and classical. Due to its similarity to standard tuning, drop D is recognised as a useful introduction to alternative tunings, leading logically to an exploration of DADGAD, open D and drop D drop G (in which both the 5th and 6th strings are dropped a tone) tunings. The tuning allows for chords with a root or bass note of D to be played with a D an octave lower than with standard tuning. It also allows the playing of open D chords that include the fifth and sixth strings, letting the full sonority of the guitar be heard. This can be especially useful for songs in the keys of D major or minor and is particularly effective on acoustic guitar. Drop D also allows fingerpickers to play chord shapes higher up the neck while maintaining an alternating bass. The bottom three strings, if left open, will vibrate sympathetically and, using chord shapes limited to the top three strings, a drone effect can easily be achieved. The trade-off is the loss of the bass E note in chords or fingerings, which the player can adjust to include fretting the sixth string at the second fret (now E). 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「Drop D tuning」の詳細全文を読む スポンサード リンク
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