This is an interesting one. He Aint Heavy, He's My Brother is a Hollies classic, but Per Gessle from Roxette does a decent job of covering it.
Seems he did it for a film that wanted to use the song, but The Hollies wanted far too much money for their version.
Similar situation with "Nowhere To Run", originally by Martha & the Vandellas. The song was used in the film 'The Warriors', but they used this very decent version by Arnold McCuller.