The harmonizing husband-and-wife duo of Caleb and Kelsey Grimm are known to Christian pop fans as simply Caleb + Kelsey. Caleb had already made three albums as a member of the CCM group Anthem Lights when Caleb + Kelsey began uploading their versions of popular songs such as "Baby, It's Cold Outside," "A Whole New World," and Maroon 5's "Maps" to YouTube in 2014. They expanded their fan base with medleys of popular worship songs, including a recording of Hillsong United's "Oceans (Where Feet May Fail)" with Bethel Music's "You Make Me Brave," which was streamed over a million ...