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 times within 24 hours of premiering online in mid-2017. Caleb + Kelsey released some of the pop songs and movie themes on the album The Songs We Sang on Rhodes Records/The Fuel Music that November. They followed it just two months later with Worship, which collected their religious medleys. It became a Top Three Christian album, a Top Ten independent album, and marked their debut on the Billboard 200.