Too many of these questions (apart from the very first one, which I knew) are just people showing off their knowledge of obscure stuff. So here's an easier one. What do the following records have in common?
Bohemian Rhapsody by Queen
Annie's Song by John Denver
The Ballad of John & Yoko - The Beatles
Unchained Melody - The Righteous Brothers
Space Oddity - David Bowie