I just don't get the whole idea behind drop tuning. First and fore most, I'm a jazz player. I'm going to play all of those "jazz" 7th, 9th, 13th, Major, minor, diminished, half diminished, dominant type chords. I'm going to play them in "E" and "A" form as well as all the inversions. I watch Tim Lerch from time to time, and he has stated that he tunes down to Eb. I'm wondering why? So, if I play...say, an EbMaj7, in "A" form (standard tuning) it would look like this: X6878X. Right? But my ear (and my tuner) tells me that I'm playing a DMaj7th. So, why not tune to standard tuning, and just play a Dmaj7th? Furthermore; the whole "band" would have to tune down as well, which of course, would drive the horn players absolutely bat-**** crazy. Is it an open chord/cowboy chord thing? What's the point? What am I missing?