Duffy- Mercy | Cover Sep 7, 2017 Black Magic, Cover, Cover Duffy, Cover Mercy, Cover Pop, Cover Soul, Rockferry, i’m gonna sing Mercy by Duffy, i Hope you like it! enjoy it! Like 0 Thanks! You've already liked this « Warwick Avenue- Duffy Cover by Sha’Air » Duffy-Warwick Ave (Laura Broad Live Cover)