So I've recently bought all 3 of these cds. First was At Fillmore and despite the editing, I liked it. Then was It's About That Time, liked that one also. Then Black Beauty; I like it, but I could tell after the first song, it wasn't as good (together maybe?) as the other two, but I don't know why yet. I've read it being about the mix which is possible, but I can tell something's missing. Any theories? Mine is the day it was recorded, April 10, 1970, was the day it was publically announced that The Beatles had broken up. I figure everyone was down except Miles, "Fuck them, motherfuckers! You guys can play way better than those fuckin' mother, motherfuckers!" As you can tell, he was pretty broken up about it.