Tom Hiddleston surprised concert attendees at Michigan's Wheatland Music Festival on Saturday, stopping by to perform a cover of Hank Williams' "Move It On Over."
The British actor famous for playing the super villain Loki in the Thor and Avengers movies is set to portray the singer in an upcoming biopic called I Saw the Light.
On Sunday, he returned again to join Rodney Crowell on Williams' "I'm So Lonesome I Could Cry":
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