Where have you been? DADGAD is a modal tuning. The I chord is fingered 000200. It has a blend between a major D and a Dm. This tuning is used extensively in Celtic music. It also works very well with some Appalacian music. Shady Grove is a well known tune that works well in DADGAD. I first learned it from a banjo player back in 1964 or 65. The tuning had shown up on Tom Rush's first Elektra album. He called it D-Modal tuning. The V chord is fingered 032000. It is a very entertaining tuning to try out. Enjoy!
Roger in Baltimore