At first I didn't know what to put on the list, but, after thinking about a lot of albums and pieces of music has come to my mind, there are a lot of them that would be on the list, but I have restricted it to the number then. As you can see, it's a multidisciplinary list:
The Beatles - Sgt. Peppers Lonely Hearts Club Band
Genesis - The Lamb Lies Down on Broadway
John Coltrane - Love Supreme
George Gershwin - American Rhapsody
Lou Reed - Rock'n'Roll Animal
Bob Dylan - The Freewheelin'
Yes - Close to the Edge
Igor Stravinsky - Le Sacre du Printemps
Musorgsky - Pictures at an Exhibition
Jethro Tull - Thick as a Brick
It's so personal. I recognize that there are a lot more of songs and albums that are worth to be there instead of the others. But is what I'm feeling now!