DADGAD

[1] Inspired by hearing an oud player in Morocco, Graham experimented with detuning some of the guitar's strings from standard tuning (E2 A2 D3 G3 B3 E4), arriving at D2 A2 D3 G3 A3 D4 or D A D G A D .

[citation needed] Other proponents of the tuning include Roy Harper, John Martyn, Ben Howard, Andy Mckee, Russian Circles, Mike Dawes, Alejandro Aranda, Rory Gallagher, Luka Bloom, Stan Rogers, Jimmy Page (The Yardbirds' "White Summer" and Led Zeppelin's "Black Mountain Side" and "Kashmir" use this tuning), Neil Young, Artie Traum, Pierre Bensusan,[2][3] Eric Roche, Midnight, Laurence Juber, Tony McManus, Stephen Wake, Bert Jansch, Richard Thompson, Dick Gaughan, Alistair Hulett, Steve von Till (along with its modified form, A A D G A D), Imaad Wasif, Mark Kozelek, Jeff Tweedy, Masaaki Kishibe, Paul McSherry, Acle Kahney (uses a 7 string variation, B♭ F B♭ E♭ F B♭ E♭ ), Sevendust (although downtuned),[4] Kotaro Oshio, Ben Chasny, Al Petteway, Justin Currie, Lankum and Trey Anastasio.

English folk musician Martin Carthy now mostly uses a related tuning, C G C D G A, whose evolution from E A D G B E he describes explicitly in his 1987 book.

[5] The suitability of D A D G A D to Celtic music stems from the fact that it facilitates the use of a number of moveable chords, which retain open strings.

[6] These act as a drone on either the bass or treble strings, approximating the voicings used in traditional Scottish and Irish pipe music.