Open C Tuning

Open C Tuning is an open tuning for guitar. The open-string notes uses the three notes that form the triad of a C major chord: C, the root note; G, the perfect fifth; and E the major third. When the guitar is strummed without fretting any of the strings a C major chord is sounded. This means that any major chord can be easily created using one finger, fretting all the strings at once.


There are several Open C tunings, for example

C-G-C-G-C-E.

This open C tuning was used by William Ackerman for his "Townsend Shuffle" and by John Fahey for his tribute to Mississippi John Hurt.

The English guitar used an open C tuning that approximated a major-thirds tuning, such as

C-E-G♯-C-E-G♯.

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