Guitar chord in the abstract musical-theory of chords for all instruments. For example, in the guitar (like other stringed instruments but unlike the piano), open-string notes are not fretted and so require less hand-motion. Thus chords that contain open notes are more easily played and hence more frequently played in popular music, such as folk music. Many of the most popular tunings—standard tuning, open tunings, and new standard tuning—are rich in the open notes used by popular chords. Open tunings allow major triads to be played by barring one fret with only one finger, using the finger like a capo. On guitars
B♭ tuning B♭ tuning B tuning, or A tuning, is a method of guitar tuning (and stringed instruments per se) in which all strings on a six-stringed instrument, most often guitar, are tuned down by 3 steps. For example, standard guitar tuning is E A D G B E. B♭ tuning starts by tuning the lowest string on a guitar E, to B♭ and then tuning all strings down in the same interval of 3 steps down. Strings on a guitar tuned to B♭ are B♭ E♭ A♭ D♭ F B♭ Seven-string guitars achieve B and B♭ tuning because they have a