Bands that had a "masterpiece", w/ common theme


Odd title. "sorry if it turns you off"
Pink Floyd "The Wall" @ "The Final Cut" (underated)
Kansas "Leftoverture"
ELP "Brain Salad Surgery"
Manfred Mann "The Roaring Silence"
I could go on, this is just to get it started.
128x128slaw
Just off the top of my head...

Okkervil River "Black Sheep Boy"
Okkervil River "the Stage Names"
Okkervil River "the Stand Ins"

Tool "Lateralus"

M. Ward "Transfiguration of Vincent"

John Fahey "Blind Joe Death" along with the various later rereleases.

Built to Spill "Perfect from Now On"

Modest Mouse "The Moon and Antarctica"

Frank Zappa "joe's garage" although the entire output of Zappa should be considered a masterpiece with a common theme considering how he cut and pasted live performances with studio material all the time.

spirit- 12 dreams of Dr.SARDONICOUS. PRETTY THINGS-SF SORROW,THE WHO-TOMMY,QUADRAPHENIA,
Other than those listed, these come to mind.

Rush-2112
Queensryche-Operation Mindcrime
Dream Theater-Metropolis, Scenes from a memory