The best live shows (and I'm talking about shows not a single song, montage, or whatever other definition others have) were almost never entirely live. There's just too much to do. Back in 1973 it took 4 people to do Danube. Somebody designed a digital analog hybred circuit board that when combined with a multiplexer/multiplier board, a multiplier summing board, an offset generator board, a fixed rotation board, and 160 bit automation channel could run by itself. The trick is deciding what should be done meta, what should be done live, and how to design both aspects.
"There are painters who transform the sun into a yellow spot, but there are others who, with the help of their art and their intelligence, transform a yellow spot into the sun." Pablo Picasso