Don't get me wrong - Spotify is genius. Almost. Apart from the band overview section which is usually 5 years out of date and can't make distinctions between different bands that share the same name - just try Mono - there just seems to be albums disappearing all the time from Spotify in addition to albums that should be on there but for some head-scratching reason...just isn't.
Here's a few:
Grizzly Bear - Veckatimest
Katatonia - Night is the New Day (just disappeared!)
Cure - Disintegration
Boo Radleys - Everything's Alright Forever
Isis - Oceanic / In the Absence of Truth