OK, I know that this is going to be massively contentious but there really are albums that are so earth shatteringly important that when you look back you can see how they changed music forever.
Most of them are hugely well known, and deservedly so in many cases, but others tend to be only appreciated in hindsight.
I am thinking here of albums that make other people listen and think "wow, I am going to have to start doing that sort of thing" or they change the way an artist in regarded by the business and the fans or they are albums that just do something so new that they start a movement or they encapsulate a moment so well that they almost become the moment, a shorthand for what was going on at the time.
My nominations here are pretty much all well known, but I think that they do fulfil at least one of my self imposed criteria in some way, and none are recent either. I am pretty much sticking to the rock world too, because if I was going to include everything then the list would be massive.
I reckon you could do a list for Jazz, Soul, Reggae, Hiphop etc separately.
So here goes;
Bob Dylan "Bringing it all back home"
Bruce Springsteen "Born to run"
Pink Floyd "Dark side of the moon"
Led Zeppelin "Four Symbols"
Jimi Hendrix "Are you experienced"
Fairport Convention "LIege and lief"
Stone Roses "Stone Roses"
Joy Division "Unknown pleasures"
The Clash "London calling"
My reasons are varied. They are;
The Dylan one is where he first plugged it in and changed guitar pop forever
"Born to run" created Springsteen as the artist we have now
DSOTM brought Pink Floyd to world domination and opened the door to zillions of copyists and let prog hit the big time
Led Zep 4 created stadium rock
"Are you experienced" encapsulated the fusion of blues, psychedelia and rock in the 60s. Cream may have been there first but Jimi did it best
"Liege and lief" invented folk rock
"Nevermind" brought grunge to the world, OK not the first grunge album, or the grungiest but the one everyone knows - inadvertently giving us Nickelback, oh well no one's perfect!
The first Roses album is where Brit Pop began
"Unknown pleasures" gave us the right to be miserable and showed us one way how to get out of punk
"London calling" fused punk, reggae, rock 'n' roll and gave us the other way to get out of punk's impasse
A very subjective list, but I think my reasons are valid.
Now, over to the rest of you.