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After you hear this duet, you WILL be saying "Why haven't Sam Smith and John Legend recorded a song together before?!" -- if you haven't already wondered, that is. Sam and John teamed up to record a special version of Sam's recent single "Lay Me Down" in support of Red Nose Day.

Red Nose Day is widely recognized in the U.K. and supports Comic Relief - a charity organization whose "aim bring about positive and lasting change in the lives of poor and disadvantaged people, which we believe requires investing in work that addresses people's immediate needs as well as tackling the root causes of poverty and injustice."

If you thought Sam's original version of "Lay Me Down" was magical -- JUST WAIT until you hear his duet with John Legend! 

Watch Sam Smith and John Legend's "Lay Me Down" duet video below! 

Photo: Getty Images