Some nice choices made...
As stated, very difficult to decide, and many choices came to mind. These were chosen not only because they are loved, but they also are associated to experiences in my life that were extraordinary. Rather than outright cheat the OP's rule, my end run is to let chance decide. I'd take a single six-sided die, roll and accept the result.
1. Jethro Tull : Bursting Out
2. Beatles: White Album
3. Cocteau Twins: Blue Bell Knoll
4. Genesis: Seconds Out
5. Fishbone: Reality of my Surroundings
6. Altan: Harvest Storm