Are you a fan of rock opera at all? I love it! If you don't know what it is, it's basically rock music songs with lyrics that relate to a common story.
Actually yes I am. And also Metal symphony
One thing I really like about rock opera is how they use various character roles within the song lyrics. It's a pretty common storytelling device used in the genre.
I wonder what the most popular is?
I do know that Colin Fleming from "The Atlantic" identified "The Story  of Simon Simopath" by the British psychedelic band called Nirvana as being one of the first recorded rock opera. They were pretty big!
I'd say. My favorite is The Wall by Pink Floyd
of Prey (A Mini-Opera)", which closed out their sole album, which was released in January 1968. Perhaps unaware of these earlier efforts, Neil Strauss of "The New York Times" wrote that "S.F. Sorrow" (1968) by The Pretty Things is "generally acknowledged as the first rock opera". Although Pete Townshend denied taking any influence from "S.F. Sorrow", critics have compared The Who's "Tommy" to it. Scott Mervis of the "Pittsburgh Post-Gazette" wrote
about it now is that we actually got a call from Barack Obama's people saying they'd heard the song, they felt its theme really suited their campaign, and that they'd love to feature it on their fundraising record 'Yes We Can; Voices Of A Grass Roots Movement'! You know, as soon as they told me that, I was like 'You don't even have to ASK! You can use ANY of my songs for ANYTHING to do with Barack Obama!'!"
Music video