g a a’ e”
Irish fiddle player John Doherty was said to use this tuning for several tunes, to imitate the sound of the uillean pipes.
Here’s a set where he employs it:
Padraig O’Keeffe, in his manuscripts, wrote down the tune Pipe Reel where he offers this tuning as an option.
Canadian fiddle player Jean Carignan uses it in a very similar way.