"Push my pride aside / When I close my eyes / It's just you and I / Here under the mistletoe," they sang, Clarkson and Eldredge's classic voices transcending genres as they delivered the gorgeous melody and harmonies.Clarkson teamed with Aben Eubanks to co-write the song, which dropped in late October. "Under the Mistletoe" is one of two holiday songs Clarkson is releasing in 2020 in response to fan requests for some musical relief in a tumultuous year.