[quote name='Mr Arkadin' timestamp='1455036987' post='2975289']
I guess Bowie's Ziggy Stardust would count ...
[/quote]
I've always listened to it in that way, but first-hand accounts in the (many) Bowie biographies I've read suggest it didn't start out that way - the concept came out of the songs, not the other way round. Still one of my favourite albums after 40 years of listening!
[quote name='Mr Arkadin' timestamp='1455036987' post='2975289']
... but definitely 1.Outside. I just wish he'd got round to finishing the proposed trilogy.
[/quote]
It could still happen. Bowie said that 1, Outside had come from about 20 hours of improv, so who knows what other finished songs may now see the light of day. I live in hope.