An Introduction to the Wide World of Alternate 12-String Guitar Tunings – Flypaper

The more strings your guitar has, the more opportunities you've got to mess around and create dissonant new tones through subtle retuning.

Two Outrageous Harmonic Tunings For 12-String Guitar (Try Them Yourself!) -- Guitar Lesson Tutorial

The Infinite Beauty of OPEN GMAJ7 TUNING On a 12-String Guitar [Lesson Tutorial]

The Martin GPC12PA4 12 string is a fast necked, comfortable playing 14 fret solid Sitka/Sapele acoustic that delivers tone and features the great

Martin Acoustic Guitars - GPC12PA4 12-String

12 String Guitar Lessons Playlist

Two Outrageous Harmonic Tunings For 12-String Guitar (Try Them Yourself!) -- Guitar Lesson Tutorial

An Introduction to the 12 String Guitar

The Ultimate Alternate Tunings Library - Roadie Tuner

Mountain Xpress 07.17.13 by Mountain Xpress - Issuu

What does it mean to tune a stringed instrument 'polyphonically'? - Quora