[P.O.E.]

"Tales from Topographic Oceans" - Yes
"Lamb Lies Down on Broadway" - Genesis
"Remember the Future" - Nektar
"Quadrophenia" - The Who
"Let the Power Fall" - Robert Fripp

Albums that were concepts before stagings:

"Tommy" - The Who
"Jesus Christ Superstar" Rice/Webber

and

An album with no sound on it

[BnBlFlag]

Damn! I must be totally out of it. The only group on your list I’ve ever even heard of is “The Who” and the only album on the list I’ve heard of is “Jesus Christ, Superstar.