Traditional folk song set to a tune often called "Londonderry Air" which always makes 8th-graders giggle when you say it.
All real, organic instruments and voices.
I actually did this several years ago when WCVE had a "Danny Boy Contest," open invitation for local musicians to submit their own versions of the song. I didn't expect to win, but I thought at least I could get an honorable mention and people would hear it. NOPE.