Video posted to Facebook shows the group at the Sugar Island Barn in Watertown on Saturday. The band performed their hit, "Bless the Broken Road" for newlyweds Sara and Brandon McInnis' first song.
The couple had planned on the DJ playing the song. Instead, a family friend had secretly asked the band to play it in person on their way to a country music festival in Oshkosh, Wisconsin.
The band agreed, but the performance was kept a secret from the couple.