Found the link to this blog post on a McCartney Facebook forum.
It sounds a bit strange, but hey, who knows. Not exactly the first song I'd think of as a likely candidate for Freddie to sing, nor as a duet with Macca, and the blogger writes about Live Aid taking place in 1984 (oy)..but for what it's worth, it's curious to read. link
Quite interestingly, Paul was recording 'Flowers in the Dirt' at Olympic at the same time Queen were doing parts of 'The Miracle' at the same studio. The conversations they probably had in those days right before or after a session...
'Once Upon A Long Ago' was recorded in Spring-Summer of 1987. So it's a pre-'Flowers In The Dirt' period. This time Mercury probably was already totally in 'Barcelona' project so he wasn't interested in anything else.
Actually I never noticed that 'Flowers In The Dirt' was partially recorded at Olympic during 1988 and there was a possibility of meeting with Queen there.
>>link
That clip also makes it obvious they have lots of stuff 'in the can' from previous albums. Even if they're not finished, still, the treasures we could be hearing.
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