Once you've whetted your appetite for open tuning experimentation, your acoustic guitar having long forgotten ... strings at the 7th fret, a large Eadd9 chord is created. This shape has a jazzier ...
Live guitar duties are handled by long time ... B and F notes don’t form any specific chord, but we could view it as an Eadd9 (E B F#) with the add9 note flattened to an F.