I recall our elementary school renting 40-50 guitars for a few days, so we could all play Down in the Valley for a concert. Ouch! So I guess it was G. Imagine us all strumming woodenly in unison.... and trying to sing and play at the same time.... and some of us wishing we could take them home to play with on our own. I think we were in about 5th or 6th grade.~S~