The Ibanez arrived today and came out of the box tuned CGDA. It will need some new strings and a professional setup for the GDAD tuning, but as an experiment she dropped the CGDA down to CGDG to mimic the intervals of GDAD in the same way a mandola mimics the intervals of a mandolin. Since I have a Sawchyn Beavertail mandola in CGDA we decided to try playing the Irish hornpipe/march Humours of Tullycrine together.
Normally this tune requires the chords Aminor, G and Eminor. It took Laura only a few minutes to learn what those chord shapes would be if she were tuned GDAD. Of course, in CGDG those same chord shapes instead came out as Dminor, C and Aminor.
I played the melody on mandola with the fingerings I know from mandolin/tenor banjo, so what you hear is in Ddorian instead of Adorian. (I suppose she could have capo'd at 7th fret and I could have played mandolin but this was more fun!). It all synced up. I think it sounds pretty good for a semi-cheap Made in China guitar that just came out of the box, in a strange open tuning, moments after I said, "Got those chords? I'm hitting the record button". This is the first and only take! There may be some slight speeding up on my part. :(
I'll give a follow up on the Ibanez tenor guitar after it's been setup by John at Fan Guitar and Ukulele. Our initial impression is that it's a pretty OK sounding guitar, definitely a good travel guitar, but not quite as nice as the Bluerdige BR-40T. Hopefully this tuning lends a bit of authenticity to our Celtic sound. If only I would start playing more triplets!