D A D G A D, or Celtic tuning, is an alternative guitar tuning most associated with Celtic music, though it has also found use in rock, folk, metal and several other genres. Instead of the standard tuning (E2 A2 D3 G3 B3 E4) the six guitar strings are tuned, from low to high, D2 A2 D3 G3 A3 D4 .
Tuning to D A D G A D from standard is accomplished by tuning the first,[a] second,[a] and sixth[a] strings down a whole tone (two frets). The result is an open D, suspended fourth chord. Being suspended, the open tuning is neither intrinsically major nor minor.
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