'All I'm askin' is for a little respect...' You'll never believe these mega hits were cover versions!

Major music stars like Whitney Houston, Elvis Presley, Aretha Franklin and Adele have wowed fans with their moving lyrics and unforgettable melodies.
But what many fans don't realise is that many of their biggest hits were originally recorded by other artists, with the cover versions going on to win awards and receive critical acclaim.
Here are 10 hugely successful songs you didn’t know were covers...