Howzabout real, actual, pairings from history? My two favorites are:
1. Jimi Hendrix opens for The Monkees
2. The Who opens for Herman's Hermits
More seriously, I actually got to see my fantasy twosome on Jerry's 31st birthday (August 1, 1973) when The Band opened for The Dead in Roosevelt Stadium, Jersey City. 12 days later I moved to California.
Bill, tgo