Rogue II, something about I find something about "Teo Torriate (Let Us Cling Together)" to be even more depressing.
Edit: BTW, Queen is one of those bands with some amazing non-album b-sides. Some were released on the remastered CDs in 1991 (especially the killer "See What a Fool I've Been"), but several are still impossible to find. I can tell you "A Human Body" and "Lost Opportunity" are two of the best songs they recorded. (The former is a synth-driven Roger Taylor track from 1980, the latter Brian playing slow blues in 1991.)